Quinone electrochemistry in acidic and alkaline solutions & its application in large scale energy storage
|
|
- Abel Mitchell
- 6 years ago
- Views:
Transcription
1 Quinone electrochemistry in acidic and alkaline solutions & its application in large scale energy storage Michael R. Gerhardt 1, Kaixiang Lin 2, Qing Chen 1, Michael P. Marshak 1,3, Liuchuan Tong 2, Roy G. Gordon 1,2, Michael J. Aziz 1 1) Harvard School of Engineering and Applied Sciences, Cambridge, MA ) Department of Chemistry and Chemical Biology, Harvard University, Cambridge MA ) Department of Chemistry and Biochemistry, University of Colorado, Boulder C 80309
2 Energy Storage (kwh) Power Generation (kw) Photo: Eliza Grinnell, SEAS Communications 2
3 H + 2H +, 2e In aqueous acidic solution H Huskinson, B., Marshak, M. P., Suh, C., Er, S., Gerhardt, M.R., Galvin, C.J., Chen, X., Aspuru Guzik, A., Gordon, R.G., and Aziz, M.J. (2014). Nature, 505(7482),
4 H Chemistry Solution Cost ($/kwh) + 2H +, 2e Quinone Bromide <$27 Vanadium Redox $50 $180 In aqueous acidic solution H I wish I could get that price! Huskinson, B., Marshak, M. P., Suh, C., Er, S., Gerhardt, M.R., Galvin, C.J., Chen, X., Aspuru Guzik, A., Gordon, R.G., and Aziz, M.J. (2014). Nature, 505(7482),
5 H Chemistry Solution Cost ($/kwh) + 2H +, 2e Quinone Bromide <$27 Vanadium Redox $50 $180 In aqueous acidic solution H I wish I could get that price! Customizable Huskinson, B., Marshak, M. P., Suh, C., Er, S., Gerhardt, M.R., Galvin, C.J., Chen, X., Aspuru Guzik, A., Gordon, R.G., and Aziz, M.J. (2014). Nature, 505(7482),
6 H Chemistry Solution Cost ($/kwh) + 2H +, 2e Quinone Bromide <$27 Vanadium Redox $50 $180 In aqueous acidic solution H I wish I could get that price! Customizable Long cycle life Huskinson, B., Marshak, M. P., Suh, C., Er, S., Gerhardt, M.R., Galvin, C.J., Chen, X., Aspuru Guzik, A., Gordon, R.G., and Aziz, M.J. (2014). Nature, 505(7482),
7 0.2 AQDS Current Density (ma/cm 2 ) H 3 S S 3 H Potentiostat Electrolyte Solution E 0 = V vs SHE verpotential (V) [1] K. B. ldham, J. C. Myland, Electrochim. Acta. 56, (2011). [2] B. Huskinson et al., Nature. 505, (2014). 7
8 Current Density (ma/cm 2 ) H 3 S AQDS Model S 3 H Reversible 2 electron model: assume AQDS concentration at electrode surface is dictated by Nernst equation [1]. Reaction rate is mass transport limited. Measured rate constant k 0 = cm/s [2] E 0 = V vs SHE verpotential (V) [1] K. B. ldham, J. C. Myland, Electrochim. Acta. 56, (2011). [2] B. Huskinson et al., Nature. 505, (2014). 8
9 H 3 S S 3 H No catalyst required Huskinson, B., Marshak, M. P., et al. (2014). Nature, 505(7482),
10 Voltage (V) Power Density (W cm -2 ) State of Charge 10% 30% 50% 70% 90% State of Charge 10% 30% 50% 70% 90% Current Density (A cm -2 ) Data: Qing Chen Current Density (A cm -2 ) 10
11 H 3 S S 3 H Current Density (ma cm 2 ) Potential (V vs. SHE) AQDS 9,10 anthraquinone 2,7 disulfonic acid AQDS Glassy carbon electrode, 3 mm dia, 25 mv/s scan rate, 25 C. Ag/AgCl reference. Pt coil counter electrode. Supporting electrolyte 1 M H 2 S 4 Quinone concentration 1 mm 11
12 H 3 S S 3 H Current Density (ma/cm 2 ) AQDS AQS 9,10 anthraquinone 2 sulfonic acid AQDS AQS Potential (V vs. SHE) Glassy carbon electrode, 3 mm dia, 25 mv/s scan rate, 25 C. Ag/AgCl reference. Pt coil counter electrode. Supporting electrolyte 1 M H 2 S 4 Quinone concentration 1 mm 12
13 H 3 S S 3 H Current Density (ma/cm 2 ) AQDS AQS DHAQDS AQDS AQS Potential (V vs. SHE) Glassy carbon electrode, 3 mm dia, 25 mv/s scan rate, 25 C. Ag/AgCl reference. Pt coil counter electrode. Supporting electrolyte 1 M H 2 S 4 Quinone concentration 1 mm DHAQDS 1,8 dihydroxy 9,10 anthraquinone 2,7 disulfonic acid 13
14 H 3 S S 3 H 1.05 pen Circuit Potential (V) DHAQDS AQS AQDS AQDS AQS State of Charge (%) DHAQDS Posolyte: 0.5 M Br 2, 3 M HBr Negolyte: 1 M quinone, 1 to 2 M H 2 S 4 (3 M total proton concentration) 14
15 H 3 S S 3 H 1.05 pen Circuit Potential (V) DHAQDS AQS AQDS AQDS AQS State of Charge (%) DHAQDS Posolyte: 0.5 M Br 2, 3 M HBr Negolyte: 1 M quinone, 1 to 2 M H 2 S 4 (3 M total proton concentration) 15
16 Current Density (ma/cm 2 ) AQS Model Reversible 2 electron model: assume AQS concentration at electrode surface is dictated by Nernst equation [1]. Reaction rate is mass transport limited verpotential (V) Glassy carbon electrode, 3 mm dia, 25 mv/s scan rate, 25 C. Ag/AgCl reference. Pt coil counter electrode. Supporting electrolyte 1 M H 2 S 4. Quinone concentration 1 mm [1] K. B. ldham, J. C. Myland, Electrochim. Acta. 56, (2011). 16
17 Current Density (ma/cm 2 ) AQS Model Quasireversible model: Assume Butler Volmer kinetics with a rate constant k 0 = cm/s [1] verpotential (V) Glassy carbon electrode, 3 mm dia, 25 mv/s scan rate, 25 C. Ag/AgCl reference. Pt coil counter electrode. Supporting electrolyte 1 M H 2 S 4. Quinone concentration 1 mm [1] K. B. ldham, J. C. Myland, Electrochim. Acta. 56, (2011). 17
18 Voltage (V) AQS AQDS 0.2 Charge Discharge Current Density (A/cm 2 ) H 3 S S 3 H AQDS AQS Posolyte: 0.5 M Br 2, 3 M HBr 18
19 0.8 90% SoC Power Density (W/cm 2 ) % SoC AQS AQDS Current Density (A/cm 2 ) H 3 S S 3 H AQDS AQS Posolyte: 0.5 M Br 2, 3 M HBr 19
20 20
21 21
22 22
23 E 0 (mv vs SHE) ph p 23
24 300 E 0 (mv vs SHE) e, 2H + pka 1 = 7.70, pka 2 = E 0 = V E 0 dianion = V ph 24
25 e, 2H + E 0 (mv vs SHE) e, 1H + pka 1 = 7.70, pka 2 = E 0 = V E 0 dianion = V ph 25
26 e, 2H + E 0 (mv vs SHE) e, 1H + pka 1 = 7.70, pka 2 = E 0 = V E 0 dianion = V e ph 26
27 AQDS, ph 1 Current Density (ma/cm 2 ) H 3 S S 3 H verpotential (V) Glassy carbon electrode, 3 mm dia, 50 mv/s scan rate, 25 C. Ag/AgCl reference. Pt coil counter electrode. Supporting electrolyte H 2 S 4 or KH. Quinone concentration 1 mm 27
28 AQDS, ph 1 AQDS, ph 14 Current Density (ma/cm 2 ) H 3 S S 3 H verpotential (V) Glassy carbon electrode, 3 mm dia, 50 mv/s scan rate, 25 C. Ag/AgCl reference. Pt coil counter electrode. Supporting electrolyte H 2 S 4 or KH. Quinone concentration 1 mm 28
29 0.3 Current Density (ma/cm 2 ) AQDS, ph 1 AQDS, ph 14 Reversible model H 3 S S 3 H verpotential (V) Glassy carbon electrode, 3 mm dia, 50 mv/s scan rate, 25 C. Ag/AgCl reference. Pt coil counter electrode. Supporting electrolyte H 2 S 4 or KH. Quinone concentration 1 mm 29
30 3 3 30
31 0.2 2,6-DHAQ AQDS H Current Density (ma/cm 2 ) ph 14 H H 3 S 2,6 dihydroxy 9,10 anthraquinone 2,6 DHAQ S 3 H Potential (V vs SHE) 31
32 Current Density (ma/cm 2 ) ,6-DHAQ Model verpotential (V) H k 0 = 1 x 10 2 H cm/s 32
33 Current Density (ma/cm 2 ) ,6-DHAQ Model verpotential (V) H k 0 = 1 x 10 3 cm/s H 33
34 Current Density (ma/cm 2 ) ,6-DHAQ Model verpotential (V) H k 0 = 1 x 10 4 cm/s H 34
35 ,6-DHAQ Current Density (ma/cm 2 ) verpotential (V) H H 35
36 0.20 Current Density (ma/cm 2 ) ,6-DHAQ Model i 1 E 0,1 = vs SHE k 0,1 = 7 * 10 3 cm/s verpotential (V) H H 36
37 0.20 Current Density (ma/cm 2 ) ,6-DHAQ Model i 1 Model i E 0,1 = vs SHE k 0,1 = 7 * 10 3 cm/s E 0,2 = vs SHE k 0,2 = 7 * 10 3 cm/s verpotential (V) H H 37
38 0.20 Current Density (ma/cm 2 ) ,6-DHAQ Model i 1 Model i 2 Model i 1 + i E 0,1 = vs SHE k 0,1 = 7 * 10 3 cm/s E 0,2 = vs SHE k 0,2 = 7 * 10 3 cm/s verpotential (V) H H 38
39 Figure by Kaixiang Lin, manuscript under review 39
40 Cyclic voltammogram of 4 mm 2,6 DHAQ (dark cyan curve) and ferrocyanide (gold curve) scanned at 100 mv/s Work performed by Kaixiang Lin, manuscript under review 40
41 Use functional groups to create more reducing quinones 0.2 Current Density (ma cm 2 ) AQDS AQS DHAQDS Potential (V vs. SHE) H 3 S S 3 H 41
42 Use functional groups to create more reducing quinones Use quinones in alkaline environment Current Density (ma cm 2 ) AQDS AQS DHAQDS E 0 (mv vs SHE) Potential (V vs. SHE) ph H 3 S S 3 H H 3 S S 3 H H H 42
43 Use functional groups to create more reducing quinones Use quinones in alkaline environment Current Density (ma cm 2 ) AQDS AQS DHAQDS E 0 (mv vs SHE) Potential (V vs. SHE) ph ENFL 403: rganic Aqueous Redox Flow Batteries Prof. Michael J. Aziz Thursday, August 20, 1:35 pm Room 258B 43
44 This work was partially funded through the US Department of Energy ARPA-E Award DE-AR and partially funded through the Harvard School of Engineering and Applied Sciences. Top to bottom, left to right: Drew Wong, Prof. Mauricio Salles, Alvaro Valle, Dr. Junling Huang Dhruv Pillai, Prof. Michael Marshak, Dr. Rafa Gómez-Bombarelli, Liuchuan Tong Lauren Hartle, Dr. Sungjin James Kim, Dr. Changwon Suh, Kaixiang Lin, Michael Gerhardt, Dr. Eugene Beh Dr. Qing Chen, Louise Eisenach, Jennifer Wei Prof. Michael Aziz, Prof. Roy Gordon, Prof. Alán Aspuru-Guzik
45 45
46 Linear, planar diffusion,, Initial conditions:, 0,, 0 0 Boundary conditions:, All current is diffusion controlled, Reversible reaction. Nernst equation applies:,, / Notation follows Bard and Faulkner for the reaction + ne R.
47 New boundary condition:, Define a new variable: : Reversible 0: Irreversible 1 Nicholson, R. (1965). Theory and Application of Cyclic Voltammetry for Measurement of Electrode Reaction Kinetics. Analytical Chemistry, (21), Retrieved from
48 48
49 49
50 50
51 51
52 52
53 53
54 54
55 Aqueous quinone/hydroquinone couples exhibit rapid redox kinetics, require no electrocatalyst, and are inexpensive, making them attractive candidates for large-scale energy storage devices such as flow batteries 1 3. In acidic solutions, quinones undergo a rapid two-proton, two-electron reduction; however, in alkaline aqueous solutions, the picture is less clear 4. Under the right conditions, a two-electron reduction can occur as successive one-electron steps separated by a small difference in the reduction potential of each step. The underlying mechanism for the reduction of various quinones is explored as a function of ph and reduction potential. Using substituted anthraquinones and the bromine/hydrobromic acid couple, a flow battery exhibiting an open circuit voltage above 1.0 V and a peak galvanic power density above 0.7 W cm 2 is demonstrated. Furthermore, by employing soluble metal coordination complexes, a flow battery with an open circuit voltage exceeding 1.3 V is demonstrated. Mechanisms of capacity loss during cell cycling are discussed. (1) Huskinson, B.; Marshak, M. P.; Suh, C.; Er, S.; Gerhardt, M. R.; Galvin, C. J.; Chen, X.; Aspuru- Guzik, A.; Gordon, R. G.; Aziz, M. J. Nature 2014, 505 (7482), 195. (2) Huskinson, B.; Marshak, M.; Gerhardt, M.; Aziz, M. ECS Trans. 2014, 61 (37), 27. (3) Yang, B.; Hoober-Burkhardt, L.; Wang, F.; Surya Prakash, G. K.; Narayanan, S. R. J. Electrochem. Soc.2014, 161 (9), A1371. (4) Quan, M.; Sanchez, D.; Wasylkiw, M. F.; Smith, D. K. J. Am. Chem. Soc. 2007, 129 (42),
56 Check out xx thru xx In Half Cell Electrochemistry Also the Pourbaix diagram origin file Current Density (ma/cm^2) Is concentration constant? I think it s a fair assumption to make. I don t explicitly say it is anywhere Current Density and I don t have a good record of it in my lab notebook. But my slide deck from says I was adding KH and H2S4 to adjust ph. Likely the volume didn t change much so conc shouldn t change much. From Bard: A case of particular interest occurs when deltae0 = 2RT/F ln 2 ~ 35.6 mv. This occurs when there is no interaction between the reducible groups on, and the additional difficulty adding the extra electron arises purely from statistical (entropic) factors Volts (V) 56
57 Reversible model doesn t quite fit 57
58 Plugging in measured k0 value helps a little 58
59 Assuming a higher bulk DHAQDS concentration explains the height of the reduction peak 59
60 Assuming more sluggish kinetics on top of concentration error doesn t explain it 60
61 Current Density (ma/cm 2 ) Experiment First reduction Second reduction Total current E 0,1 = vs SHE k 0,1 = 7 * 10 4 cm/s E 0,2 = vs SHE k 0,2 = 7 * 10 4 cm/s Potential (V vs SHE) 61
62 Current Density (ma/cm 2 ) ,6-DHAQ Model i 1 Model i 2 Model i 1 + i verpotential (V) 62
Comparison of Capacity Retention Rates During Cycling of Quinone-Bromide Flow Batteries
MRS Advances 2016 Materials Research Society DOI: 10.1557/adv.2016. 667 Comparison of Capacity Retention Rates During Cycling of Quinone-Bromide Flow Batteries Michael R. Gerhardt 1, Eugene S. Beh 1,2,
More informationProf. M. P. Marshak Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO 80309, USA
DI: 10.1002/ ((please add manuscript number)) Article type: Full Paper Anthraquinone Derivatives in Aqueous Flow Batteries Michael R. Gerhardt, Liuchuan Tong, Rafael Gómez-Bombarelli, Qing Chen, Michael
More informationAnthraquinone Derivatives in Aqueous Flow Batteries
www.advancedsciencenews.com www.advenergymat.de Anthraquinone Derivatives in Aqueous Flow Batteries Michael R. Gerhardt, Liuchuan Tong, Rafael Gómez-Bombarelli, Qing Chen, Michael P. Marshak, Cooper J.
More informationAlkaline Benzoquinone Aqueous Flow Battery for Large-Scale Storage of Electrical Energy
FULL PAPER Flow Batteries Alkaline Benzoquinone Aqueous Flow Battery for Large-Scale Storage of Electrical Energy Zhengjin Yang, Liuchuan Tong, Daniel P. Tabor, Eugene S. Beh, Marc-Antoni Goulet, Diana
More informationTitle: Alkaline Quinone Flow Battery
Submitted 7 April 2015; Revised 15 July. This is the authors version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published
More informationA metal-free organic inorganic aqueous flow battery
This paper can be cited as: B. Huskinson, M.P. Marshak, C. Suh, S. Er, M.R. Gerhardt, C.J. Galvin, X. Chen, A. Aspuru-Guzik, R.G. Gordon and M.J. Aziz, A metal-free organicinorganic aqueous flow battery,
More information239 Lecture #4 of 18
Lecture #4 of 18 239 240 Q: What s in this set of lectures? A: Introduction, Review, and B&F Chapter 1, 15 & 4 main concepts: Section 1.1: Redox reactions Chapter 15: Electrochemical instrumentation Section
More informationAlkaline Benzoquinone Aqueous Flow Battery for Large-Scale Storage of Electrical Energy
Full paper Flow Batteries www.advenergymat.de Alkaline Benzoquinone Aqueous Flow Battery for Large-Scale Storage of Electrical Energy Zhengjin Yang, Liuchuan Tong, Daniel P. Tabor, Eugene S. Beh, Marc-Antoni
More informationCyclic Voltammetry. Objective: To learn the basics of cyclic voltammetry with a well-behaved echem system
Cyclic Voltammetry Objective: To learn the basics of cyclic voltammetry with a well-behaved echem system Introduction Cyclic voltammetry (CV) is a popular electroanalytical technique for its relative simplicity
More informationPCCP PAPER. Introduction. Liuchuan Tong, a Qing Chen, b Andrew A. Wong, b Rafael Gómez-Bombarelli, a Alán Aspuru-Guzik, Michael J.
PCCP PAPER Cite this: Phys. Chem. Chem. Phys., 217, 19, 31684 UV-Vis spectrophotometry of quinone flow battery electrolyte for in situ monitoring and improved electrochemical modeling of potential and
More informationA Practical Organic-Mediated Hybrid Electrolyser that Decouples Hydrogen Production at High Current Densities
Electronic Supplementary Material (ESI) for Chemical Science. This journal is The Royal Society of Chemistry 2018 Supplementary Information for: A Practical Organic-Mediated Hybrid Electrolyser that Decouples
More informationAndrew A. Wong, Michael J. Aziz, Shmuel M. Rubinstein
Direct visualization of electrochemical reactions and comparison of commercial carbon papers in operando by fluorescence microscopy using a quinone-based flow cell Andrew A. Wong, Michael J. Aziz, Shmuel
More informationA Phosphonate-Functionalized Quinone Redox Flow Battery at Near-Neutral ph with Record Capacity Retention Rate
Communication Energy Storage www.advenergymat.de A Phosphonate-Functionalized Quinone Redox Flow Battery at Near-Neutral ph with Record Capacity Retention Rate Yunlong Ji, Marc-Antoni Goulet, Daniel A.
More informationElectrochemistry. The study of the interchange of chemical and electrical energy.
Electrochemistry The study of the interchange of chemical and electrical energy. Oxidation-reduction (redox) reaction: involves a transfer of electrons from the reducing agent to the oxidizing agent. oxidation:
More informationJune 16 th, Charles Monroe, Levi Thompson, Alice Sleightholme, and Aaron Shinkle University of Michigan Department of Chemical Engineering
Non Aqueous Vanadium Redox Flow Batteries June 16 th, 2010 Charles Monroe, Levi Thompson, Alice Sleightholme, and Aaron Shinkle University of Michigan Department of Chemical Engineering Christian Doetsch,
More informationQuantitative analysis of GITT measurements of Li-S batteries
Quantitative analysis of GITT measurements of Li-S batteries James Dibden, Nina Meddings, Nuria Garcia-Araez, and John R. Owen Acknowledgements to Oxis and EPSRC for EP/M5066X/1 - CASE studentship, EP/P019099/1-
More informationAllen J. Bard, Netzahualcóyotl Arroyo-Currás (Netz Arroyo), Jinho Chang, Brent Bennett. Department of Chemistry and Center for Electrochemistry
REDOX Allen J. Bard, Netzahualcóyotl Arroyo-Currás (Netz Arroyo), Jinho Chang, Brent Bennett Department of Chemistry and Center for Electrochemistry The University of Texas at Austin 1 What is a redox
More informationElectrochemical reaction
Electrochemical reaction electrochemistry electrochem. reaction mechanism electrode potential Faradays law electrode reaction kinetics 1 Electrochemistry in industry Chlor-Alkali galvano industry production
More informationExploring chemical space: Molecular Space Shuttle
Exploring chemical space: Molecular Space Shuttle Alán Aspuru-Guzik Professor Harvard University http://aspuru.chem.harvard.edu Twitter: A_Aspuru_Guzik aspuru@chemistry.harvard.edu 10 82 atoms in the observable
More informationA redox-flow battery with an alloxazine-based organic electrolyte
A redox-flow battery with an alloxazine-based organic electrolyte The arvard community has made this article openly available. Please share how this access benefits you. Your story matters. Citation Published
More informationSupplementary Information. Carolyn Richmonds, Megan Witzke, Brandon Bartling, Seung Whan Lee, Jesse Wainright,
Supplementary Information Electron transfer reactions at the plasma-liquid interface Carolyn Richmonds, Megan Witzke, Brandon Bartling, Seung Whan Lee, Jesse Wainright, Chung-Chiun Liu, and R. Mohan Sankaran*,
More informationEMA4303/5305 Electrochemical Engineering Lecture 03 Electrochemical Kinetics
EMA4303/5305 Electrochemical Engineering Lecture 03 Electrochemical Kinetics Dr. Junheng Xing, Prof. Zhe Cheng Mechanical & Materials Engineering Florida International University 2 Electrochemical Kinetics
More informationLecture 12: Electroanalytical Chemistry (I)
Lecture 12: Electroanalytical Chemistry (I) 1 Electrochemistry Electrochemical processes are oxidation-reduction reactions in which: Chemical energy of a spontaneous reaction is converted to electricity
More informationSelf-discharge of electrochemical capacitors based on soluble or grafted quinone
Electronic Supplementary Material (ESI for Physical Chemistry Chemical Physics. This journal is the Owner Societies 2016 Electronic Supplementary Information Self-discharge of electrochemical capacitors
More informationUnit 12 Redox and Electrochemistry
Unit 12 Redox and Electrochemistry Review of Terminology for Redox Reactions OXIDATION loss of electron(s) by a species; increase in oxidation number. REDUCTION gain of electron(s); decrease in oxidation
More informationLithium-ion Batteries Based on Vertically-Aligned Carbon Nanotubes and Ionic Liquid
Electronic Supplementary Information Lithium-ion Batteries Based on Vertically-Aligned Carbon Nanotubes and Ionic Liquid Electrolytes Wen Lu, * Adam Goering, Liangti Qu, and Liming Dai * 1. Synthesis of
More informationFundamental molecular electrochemistry - potential sweep voltammetry
Fundamental molecular electrochemistry - potential sweep voltammetry Potential (aka voltammetric) sweep methods are the most common electrochemical methods in use by chemists today They provide an efficient
More information3. Potentials and thermodynamics
Electrochemical Energy Engineering, 2012 3. Potentials and thermodynamics Learning subject 1. Electrochemical reaction 2. Thermodynamics and potential 3. Nernst equation Learning objective 1. To set up
More informationSupplementary Material. Improving cycling performance of LiMn 2 O 4 battery by. adding an ester functionalized ionic liquid to electrolyte
10.1071/CH15154_AC CSIRO 2015 Australian Journal of Chemistry 2015, 68 (12), 1911-1917 Supplementary Material Improving cycling performance of LiMn 2 O 4 battery by adding an ester functionalized ionic
More informationRedox additive Aqueous Polymer-gel Electrolyte for Electric Double Layer Capacitor
Electronic Supplementary Information Redox additive Aqueous Polymer-gel Electrolyte for Electric Double Layer Capacitor S.T. Senthilkumar, a R. Kalai Selvan,* a N.Ponpandian b and J.S. Melo c a Solid State
More informationSingle Catalyst Electrocatalytic Reduction of CO 2 in Water to H 2 :CO Syngas Mixtures with Water Oxidation to O 2
Electronic Supplementary Material (ESI) for Energy & Environmental Science. This journal is The Royal Society of Chemistry 2014 Supporting Information Single Catalyst Electrocatalytic Reduction of CO 2
More information206 Lecture #4 of 17
Lecture #4 of 17 206 207 Q: What s in this set of lectures? A: B&F Chapters 1, 15 & 4 main concepts: Section 1.1: Redox reactions Chapter 15: Electrochemical instrumentation Section 1.2: Charging interfaces
More informationSupporting Information
Supporting Information 1 The influence of alkali metal cations upon AQ redox system Figure 1 depicts the anthraquinone-2-sulfonate (AQ) redox signals in aqueous solutions supported with various alkali
More informationCorrelating Hydrogen Evolution Reaction Activity in Alkaline Electrolyte to Hydrogen Binding Energy on Monometallic Surfaces
Supplemental Materials for Correlating Hydrogen Evolution Reaction Activity in Alkaline Electrolyte to Hydrogen Binding Energy on Monometallic Surfaces Wenchao Sheng, a MyatNoeZin Myint, a Jingguang G.
More informationSupplementary Materials for
advances.sciencemag.org/cgi/content/full/3/6/e1758/dc1 Supplementary Materials for A selective electrocatalyst ased direct methanol fuel cell operated at high concentrations of methanol This PDF file includes:
More informationDETERMINING THE OPERATING CONDITIONS OF ALL-VANADIUM REDOX FLOW BATTERY
Proceedings of the Asian Conference on Thermal Sciences 2017, 1st ACTS March 26-30, 2017, Jeju Island, Korea ACTS-P00650 DETERMINING THE OPERATING CONDITIONS OF ALL-VANADIUM REDOX FLOW BATTERY Jungmyoung
More informationUnlocking the capacity of iodide for high-energy-density. zinc/polyiodide and lithium/polyiodide redox flow batteries
Electronic Supplementary Material (ESI) for Energy & Environmental Science. This journal is The Royal Society of Chemistry 2017 Electronic Supplementary Information (ESI) Unlocking the capacity of iodide
More informationChapter 19: Oxidation - Reduction Reactions
Chapter 19: Oxidation - Reduction Reactions 19-1 Oxidation and Reduction I. Oxidation States A. The oxidation rules (as summarized by Mr. Allan) 1. In compounds, hydrogen has an oxidation # of +1. In compounds,
More informationAchieving Selective and Efficient Electrocatalytic Activity for CO 2 Reduction Using Immobilized Silver Nanoparticles
Supporting Information Achieving Selective and Efficient Electrocatalytic Activity for CO 2 Reduction Using Immobilized Silver Nanoparticles Cheonghee Kim, a Hyo Sang Jeon, a,b Taedaehyeong Eom, c Michael
More informationHydrodynamic Electrodes and Microelectrodes
CHEM465/865, 2004-3, Lecture 20, 27 th Sep., 2004 Hydrodynamic Electrodes and Microelectrodes So far we have been considering processes at planar electrodes. We have focused on the interplay of diffusion
More informationElectronic Supplementary Information (ESI) for
Electronic Supplementary Material (ESI) for Energy & Environmental Science. This journal is The Royal Society of Chemistry 2016 Electronic Supplementary Information (ESI) for Highly water- soluble three-
More informationImproved methods for storing electrical energy from intermittent
ARTICLES PUBLISED: 18 JULY 2016 ARTICLE UMBER: 16102 DI: 10.1038/EERGY.2016.102 A redox-flow battery with an alloxazine-based organic electrolyte Kaixiang Lin 1, Rafael Gómez-Bombarelli 1, Eugene S. Beh
More informationFunctionalization of reduced graphene oxides by redox-active ionic liquids for energy storage
Supplementary Material (ESI) for Chemical Communications Functionalization of reduced graphene oxides by redox-active ionic liquids for energy storage Sung Dae Cho, a Jin Kyu Im, b Han-Ki Kim, c Hoon Sik
More informationIntroduction to Cyclic Voltammetry Measurements *
OpenStax-CNX module: m34669 1 Introduction to Cyclic Voltammetry Measurements * Xianyu Li Andrew R. Barron This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License
More informationBasic Concepts in Electrochemistry
Basic Concepts in Electrochemistry 1 Electrochemical Cell Electrons Current + - Voltage Source ANODE Current CATHODE 2 Fuel Cell Electrons (2 e) Current - + Electrical Load ANODE Current CATHODE H 2 2H
More informationSupporting Information. The Study of Multireactional Electrochemical Interfaces Via a Tip Generation/Substrate
Supporting Information The Study of Multireactional Electrochemical Interfaces Via a Tip Generation/Substrate Collection Mode of Scanning Electrochemical Microscopy The Hydrogen Evolution Reaction for
More informationSpecial Lecture Series Biosensors and Instrumentation
!1 Special Lecture Series Biosensors and Instrumentation Lecture 2: Introduction to Electrochemistry Electrochemistry Basics Electrochemistry is the study of electron transfer processes that normally occur
More informationHalf-Cell, Steady-State Flow-Battery Experiments. Robert M. Darling and Mike L. Perry
Half-Cell, Steady-State Flow-Battery Experiments Robert M. Darling and Mike L. Perry United Technologies Research Center, East Hartford, Connecticut, 06108, USA An experimental approach designed to separately
More informationSupporting Information
Supporting Information Synchrotron-Based In Situ Characterization of Carbon-Supported Platinum and Platinum Monolayer Electrocatalysts Kotaro Sasaki 1*, Nebojsa Marinkovic 2, Hugh S. Isaacs 1, Radoslav
More informationProbing into the Electrical Double Layer Using a Potential Nano-Probe
A3 Foresight Program, 2. 27-3. 1, 26 Probing into the Electrical Double Layer Using a Potential Nano-Probe Heon Kang ( 姜憲 ) Department of Chemistry, Seoul National University, Republic of Korea (E-mail:
More informationNovel electrode PtCr/PAA (polyamic acid) for efficient ethanol oxidation reaction
Novel electrode PtCr/PAA (polyamic acid) for efficient ethanol oxidation reaction Jing Zhang Supervisor : mowunmi Sadik Material Science and Engineering & Chemistry Department 11/08/2015 utline Introduction
More informationElectrode kinetics, finally!
1183 Q: What s in this set of lectures? A: B&F Chapter 3 main concepts: Sections 3.1 & 3.6: Homogeneous Electron-Transfer (ET) (Arrhenius, Eyring, TST (ACT), Marcus Theory) Sections 3.2, 3.3, 3.4 & 3.6:
More informationContents. Publisher s Foreword. Glossary of Symbols and Abbreviations
Publisher s Foreword Glossary of Symbols and Abbreviations v xiii 1 Equilibrium Electrochemistry and the Nernst Equation 1 1.1 Cell Thermodynamics....................... 1 1.2 The Nernst Equation........................
More informationFernando O. Raineri. Office Hours: MWF 9:30-10:30 AM Room 519 Tue. 3:00-5:00 CLC (lobby).
Fernando O. Raineri Office Hours: MWF 9:30-10:30 AM Room 519 Tue. 3:00-5:00 CLC (lobby). P1) What is the reduction potential of the hydrogen electrode g bar H O aq Pt(s) H,1 2 3 when the aqueous solution
More informationSupporting Information: Reaction Layer Imaging Using Fluorescence Electrochemical Microscopy
Supporting Information: Reaction Layer Imaging Using Fluorescence Electrochemical Microscopy Minjun Yang 1, Christopher Batchelor-McAuley 1, Enno Kätelhön 1, Richard G. Compton 1 () 1 Department of Chemistry,
More informationNernst voltage loss in oxyhydrogen fuel cells
Nernst voltage loss in oxyhydrogen fuel cells Jinzhe Lyu (Division for Experimental Physics, School of Nuclear Science & Engineering, National Research Tomsk Polytechnic University, Lenina Ave. 43, Tomsk,
More informationGalvanic Cells Spontaneous Electrochemistry. Electrolytic Cells Backwards Electrochemistry
Today Galvanic Cells Spontaneous Electrochemistry Electrolytic Cells Backwards Electrochemistry Balancing Redox Reactions There is a method (actually several) Learn one (4.10-4.12) Practice (worksheet)
More informationChapter Nineteen. Electrochemistry
Chapter Nineteen Electrochemistry 1 Electrochemistry The study of chemical reactions through electrical circuits. Monitor redox reactions by controlling electron transfer REDOX: Shorthand for REDuction-OXidation
More informationCHEMISTRY 13 Electrochemistry Supplementary Problems
1. When the redox equation CHEMISTRY 13 Electrochemistry Supplementary Problems MnO 4 (aq) + H + (aq) + H 3 AsO 3 (aq) Mn 2+ (aq) + H 3 AsO 4 (aq) + H 2 O(l) is properly balanced, the coefficients will
More informationProton-Coupled Electron Transfer Kinetics for the Hydrogen Evolution Reaction of Hangman Porphyrins
Electronic Supplementary Information Proton-Coupled Electron Transfer Kinetics for the Hydrogen Evolution Reaction of Hangman Porphyrins Manolis M. Roubelakis, D. Kwabena Bediako, Dilek K. Dogutan and
More informationK a = [H + ][A ]/[HA] ph = log([h + ]) K b = [HA][HO ]/[A ]
Chemistry 271 23XX Prof. Jason Kahn Your Name: University of Maryland, College Park Your SID #: General Chemistry and Energetics Final Exam (200 points total) You have 120 minutes for this exam. Your Section
More information4. Electrode Processes
Electrochemical Energy Engineering, 2012 4. Electrode Processes Learning subject 1. Working electrode 2. Reference electrode 3. Polarization Learning objective 1. Understanding the principle of electrode
More informationSupplementary Information. Unusual High Oxygen Reduction Performance in All-Carbon Electrocatalysts
Supplementary Information Unusual High Oxygen Reduction Performance in All-Carbon Electrocatalysts Wei Wei 1, 4,, Ying Tao 1, 4,, Wei Lv 2,, Fang-Yuan Su 2, Lei Ke 2, Jia Li 2, Da-Wei Wang 3, *, Baohua
More informationIn all electrochemical methods, the rate of oxidation & reduction depend on: 1) rate & means by which soluble species reach electrode surface (mass
Voltammetry Methods based on an electrolytic cell Apply potential or current to electrochemical cell & concentrations change at electrode surface due to oxidation & reduction reactions Can have 2 or 3
More informationCHAPTER-5 CYCLIC VOLTAMETRIC STUDIES OF NOVEL INDOLE ANALOGUES PREPARED IN THE PRESENT STUDY
CHAPTER-5 CYCLIC VOLTAMETRIC STUDIES OF NOVEL INDOLE ANALOGUES PREPARED IN THE PRESENT STUDY Page No. 175-187 5.1 Introduction 5.2 Theoretical 5.3 Experimental 5.4 References 5. 1 Introduction Electrochemical
More informationFeasibility Study of Pyrochemical Treatment on Fuel Debris by Performing U and Zr Electrochemistry in LiCl-KCl Molten Salt
Feasibility Study of Pyrochemical Treatment on Fuel Debris by Performing U and Zr Electrochemistry in LiCl-KCl Molten Salt Supathorn (Supy) Phongikaroon, Ph.D., P.E. Associate Professor International Experts
More informationRedox Titration. Properties of Umass Boston
Redox Titration Redox Titration Ce 4+ + Fe 2+ Ce 3+ + Fe 3+ Redox titration is based on the redox reaction (oxidation-reduction) between analyte and titrant. Position of the end point Determine the end
More informationUnit 2 Electrochemical methods of Analysis
Unit 2 Electrochemical methods of Analysis Recall from Freshman Chemistry: Oxidation: Loss of electrons or increase in the oxidation number Fe 2 e - Fe 3 Reduction: Gain of electrons or decreases in the
More informationGoals. The laboratory instructor has already purged the solutions of dissolved. Purging the from these solutions prevents spurious
Goals 41 Cyclic Voltammetry XXGoals The goals of this experiment are to: Learn how to set up a screen-printed electrode Learn how to operate the Gamry potentiostat Determine the redox potential of potassium
More informationProtocols for studying intercalation electrodes materials: Part II: Potentiodynamic Cycling with Galvanostatic Acceleration (PCGA)
Electrochemistry - Application note n 2 Protocols for studying intercalation electrodes materials: Part II: Potentiodynamic Cycling with Galvanostatic Acceleration (PCGA) Available instruments for the
More informationA new, high performance CuO/LiNi 0.5 Mn 1.5 O 4 lithium-ion battery
A new, high performance /LiNi 0.5 Mn 1.5 O 4 lithium-ion battery Roberta Verrelli and Jusef Hassoun Department of Chemistry, University Sapienza of Rome, Italy Attila Farkas, Timo Jacob and Bruno Scrosati
More informationCHM 213 (INORGANIC CHEMISTRY): Applications of Standard Reduction Potentials. Compiled by. Dr. A.O. Oladebeye
CHM 213 (INORGANIC CHEMISTRY): Applications of Standard Reduction Potentials Compiled by Dr. A.O. Oladebeye Department of Chemistry University of Medical Sciences, Ondo, Nigeria Electrochemical Cell Electrochemical
More informationChapter 20. Electrochemistry. Chapter 20 Problems. Electrochemistry 7/3/2012. Problems 15, 17, 19, 23, 27, 29, 33, 39, 59
Chemistry, The Central Science, 11th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Chapter 20 John D. Bookstaver St. Charles Community College Cottleville, MO Chapter 20 Problems
More informationChapter 21 Electrochemistry
Chapter 21 Electrochemistry - electrochemistry and electrochemical processes are some of the most important sources of power that we have - batteries - much publicized hydrogen fuel cells - photosynthesis
More informationSupporting Information. Electrochemical Vapor Deposition (E-CVD) of Semiconductors from Gas. Phase with a Solid Membrane Cell
Supporting Information Electrochemical Vapor Deposition (E-CVD) of Semiconductors from Gas Phase with a Solid Membrane Cell Sung Ki Cho 1, Fu-Ren F. Fan, and Allen J. Bard * Center for Electrochemistry,
More informationElectron Transfer Reactions
ELECTROCHEMISTRY 1 Electron Transfer Reactions 2 Electron transfer reactions are oxidation- reduction or redox reactions. Results in the generation of an electric current (electricity) or be caused by
More informationElectrochemistry Worksheets
Electrochemistry Worksheets Donald Calbreath, Ph.D. Say Thanks to the Authors Click http://www.ck12.org/saythanks (No sign in required) To access a customizable version of this book, as well as other interactive
More informationThe Importance of Electrochemistry for the Development of Sustainable Mobility
TUM CREATE Centre for Electromobility, Singapore The Importance of Electrochemistry for the Development of Sustainable Mobility Jochen Friedl, Ulrich Stimming DPG-Frühjahrstagung, Working Group on Energy,
More informationA new concept of charging supercapacitors based on a photovoltaic effect
Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2016 Electronic supporting information (ESI) A new concept of charging supercapacitors based on a photovoltaic
More informationChapter 12: Chemistry of Solutions
General Chemistry II (Chem 1412/LSC - Tomball) Chapter 12: Chemistry of Solutions I. Stoichiometry of Chemical Equations A. Mole Interpretation of an Equation B. Stoichiometry of a Chemical Reaction C.
More informationChemistry: The Central Science. Chapter 20: Electrochemistry
Chemistry: The Central Science Chapter 20: Electrochemistry Redox reaction power batteries Electrochemistry is the study of the relationships between electricity and chemical reactions o It includes the
More informationCarbon nanotubes and conducting polymer composites
University of Wollongong Thesis Collections University of Wollongong Thesis Collection University of Wollongong Year 4 Carbon nanotubes and conducting polymer composites May Tahhan University of Wollongong
More informationElectronic Supplementary Information
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2014 Electronic Supplementary Information Three-dimensional amorphous tungsten-doped
More informationSupporting Information
I/ A Electronic Supplementary Material (ESI) for Chemical Communications Supporting Information Semiconducting Single-Wall Carbon Nanotube and Covalent Organic Polyhedron-C 6 Nanohybrids for Light Harvesting
More information(name) Electrochemical Energy Systems, Spring 2014, M. Z. Bazant. Final Exam
10.626 Electrochemical Energy Systems, Spring 2014, M. Z. Bazant Final Exam Instructions. This is a three-hour closed book exam. You are allowed to have five doublesided pages of personal notes during
More informationRedox-Active Polypyrrole: Toward Polymer-Based Batteries**
DOI: 10.1002/adma.200600375 Redox-Active Polypyrrole: Toward Polymer-Based Batteries** By Hyun-Kon Song and G. Tayhas R. Palmore* One of the most important challenges in energy research is the development
More informationProtocols for studying intercalation electrodes materials: Part I: Galvanostatic cycling with potential limitation (GCPL)
Electrochemistry - Application note n 1 Protocols for studying intercalation electrodes materials: Part I: Galvanostatic cycling with potential limitation (GCPL) Available instruments for the GCPL protocol
More informationELECTROCHEMICAL CELLS
ELECTROCHEMICAL CELLS Electrochemistry 1. Redox reactions involve the transfer of electrons from one reactant to another 2. Electric current is a flow of electrons in a circuit Many reduction-oxidation
More informationElectrochemical Cell - Basics
Electrochemical Cell - Basics The electrochemical cell e - (a) Load (b) Load e - M + M + Negative electrode Positive electrode Negative electrode Positive electrode Cathode Anode Anode Cathode Anode Anode
More information[Supplementary Information] One-Pot Synthesis and Electrocatalytic Activity of Octapodal Au-Pd Nanoparticles
[Supplementary Information] One-Pot Synthesis and Electrocatalytic Activity of Octapodal Au-Pd Nanoparticles Jong Wook Hong, Young Wook Lee, Minjung Kim, Shin Wook Kang, and Sang Woo Han * Department of
More informationElectronic Supplementary Information. Surfactant-assisted ammonium vanadium oxide as superior cathode for calcium ion batteries
Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is The Royal Society of Chemistry 2018 Electronic Supplementary Information Surfactant-assisted ammonium vanadium
More informationStandard reduction potentials are established by comparison to the potential of which half reaction?
HW10 Electrochemical Poten al, Free Energy, and Applica ons This is a preview of the draft version of the quiz Started: Nov 8 at 5:51pm Quiz Instruc ons Question 1 What is the E for cell + 4+ 3+ Zn(s)
More informationPractice Homework #3 Chem 248 Ardo Version:
Read Chapter 4, answer the following problems, and indicate with whom you worked:. (1) Do problems 1.11, 1.12, 2.10, and 4.1 in Bard and Faulkner (B&F). Answers: Problem 1.12a: Starting with expression
More informationSupplementary Figure 1 XPS, Raman and TGA characterizations on GO and freeze-dried HGF and GF. (a) XPS survey spectra and (b) C1s spectra.
Supplementary Figure 1 XPS, Raman and TGA characterizations on GO and freeze-dried HGF and GF. (a) XPS survey spectra and (b) C1s spectra. (c) Raman spectra. (d) TGA curves. All results confirm efficient
More informationSupporting Information
Supporting Information Characterizing Emulsions by Observation of Single Droplet Collisions Attoliter Electrochemical Reactors Byung-Kwon Kim, Aliaksei Boika, Jiyeon Kim, Jeffrey E. Dick, and Allen J.
More informationEnhanced performance of a Bi-modified graphite felt as the positive. Z. González, A. Sánchez, C. Blanco, M. Granda, R. Menéndez, R.
Enhanced performance of a Bi-modified graphite felt as the positive electrode of a vanadium redox flow battery Z. González, A. Sánchez, C. Blanco, M. Granda, R. Menéndez, R. Santamaría Instituto Nacional
More informationSupplemental Information for. A Sulfonate Functionalized Viologen Enabling Neutral Cation Exchange
Supplemental Information for A Sulfonate Functionalized Viologen Enabling Neutral Cation Exchange Aqueous Organic Redox Flow Batteries towards Renewable Energy Storage Camden DeBruler, Bo Hu, Jared Moss,
More informationSolution Purging. Goals. 1. Purge both solutions with an inert gas (preferably N 2
Goals 43 Cyclic Voltammetry XXGoals The goals of this experiment are to: Learn how to set up a screen-printed electrode Learn how to operate the Gamry potentiostat Determine the redox potential of potassium
More informationUnusual Stability of Acetonitrile-Based Superconcentrated. Electrolytes for Fast-Charging Lithium-Ion Batteries
Supporting Information for Unusual Stability of Acetonitrile-Based Superconcentrated Electrolytes for Fast-Charging Lithium-Ion Batteries Yuki Yamada,, Keizo Furukawa, Keitaro Sodeyama,, Keisuke Kikuchi,
More informationElectro-deposition of Pd on Carbon paper and Ni foam via surface limited redox-replacement reaction for oxygen reduction reaction
Electro-deposition of Pd on Carbon paper and Ni foam via surface limited redox-replacement reaction for oxygen reduction reaction Mmalewane Modibedi, Eldah Louw, MKhulu Mathe, Kenneth Ozoemena mmodibedi@csir.co.za
More information