Chen, Yikai and Lewis, Nathan (2022) Numerical Simulation and Modeling of Hydrogen Gas Evolution on Planar and Microwire Array Electrodes. Journal of the Electrochemical Society, 169 (6). Art. No. 066510. ISSN 0013-4651. doi:10.1149/1945-7111/ac751e. https://resolver.caltech.edu/CaltechAUTHORS:20220606-736390000
![[img]](https://authors.library.caltech.edu/style/images/fileicons/application_pdf.png) |
PDF
- Published Version
Creative Commons Attribution Non-commercial No Derivatives. 1MB |
|
PDF
- Accepted Version
Creative Commons Attribution. 917kB |
|
PDF
- Supplemental Material
Creative Commons Attribution Non-commercial No Derivatives. 664kB |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20220606-736390000
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.
| Item Type: | Article | ||||||
|---|---|---|---|---|---|---|---|
| Related URLs: |
| ||||||
| ORCID: |
| ||||||
| 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. | ||||||
| Group: | JCAP | ||||||
| Funders: |
| ||||||
| Issue or Number: | 6 | ||||||
| DOI: | 10.1149/1945-7111/ac751e | ||||||
| Record Number: | CaltechAUTHORS:20220606-736390000 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20220606-736390000 | ||||||
| Official Citation: | Yikai Chen and Nathan S. Lewis 2022 J. Electrochem. Soc. 169 066510 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 115044 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | George Porter | ||||||
| Deposited On: | 07 Jun 2022 15:04 | ||||||
| Last Modified: | 30 Jun 2022 17:53 |
Repository Staff Only: item control page
