Numerical Simulation and Modeling of Hydrogen Gas Evolution on Planar and Microwire Array Electrodes
- Creators
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Chen, Yikai
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Lewis, Nathan
Abstract
The impact of gas evolution on the electrochemical characteristics of planar electrodes and microwire array electrodes has been analyzed using modeling and simulation. The impacts can mainly be broken into three phenomena: a) a shift in the local reversible hydrogen electrode potential; b) hyperpolarization; and c) an increase in the solution resistance of the electrolyte. The local reversible hydrogen electrode potential shift was found to play the most important role, constituting >40% of the total potential drop between the cathode and reference electrode, following correction for cell resistance. Compared to planar electrodes, a microwire array structure reduces the impact of bubbles on the solution conductance, but the shift in the local reversible hydrogen electrode potential varies with distance from the actual electrode surface.
Additional Information
© 2022 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. Received 4 February 2022. Revised 24 May 2022. Accepted 31 May 2022. Accepted Manuscript online 1 June 2022. This work was supported in part by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award number DE-SC0022087. This work was also supported in part by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award number DE-SC0004993. We are grateful to participate in this special issue to acknowledge on his 100th birthday the seminal contributions and extraordinary collegiality of Prof John Goodenough over decades of inspirational service to electrochemical societies, research, technology and electrochemists.Attached Files
Published - Chen_2022_J._Electrochem._Soc._169_066510.pdf
Accepted Version - Chen+et+al_2022_J._Electrochem._Soc._10.1149_1945-7111_ac751e.pdf
Supplemental Material - jesac751esupp1.pdf
Files
Additional details
- Eprint ID
- 115044
- Resolver ID
- CaltechAUTHORS:20220606-736390000
- DE-SC0022087
- Department of Energy (DOE)
- DE-SC0004993
- Department of Energy (DOE)
- Created
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2022-06-07Created from EPrint's datestamp field
- Updated
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2022-06-30Created from EPrint's last_modified field
- Caltech groups
- JCAP