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Kinetics of the Hydrogen Electrode Reaction
Open accessAbstract
It is well recognized that the standard Butler-Volmer equation is lacking in an adequate description of the kinetics of the hydrogen electrode reaction over the complete range of potentials for the alkaline as well as the acid electrolytes.Further, it is unable to explain the asymmetry in current vs potential observed in the hydrogen evolution reaction ͑HER͒ vs the hydrogen oxidation reaction ͑HOR͒.In fact, even kinetic descriptions via two-step mechanisms ͑Volmer-Heyrovsky, Volmer-Tafel, or Heyrovsky-Tafel͒ are individually applicable only in limited potential ranges.We present an approach that provides explicit rate expressions involving kinetics of all the three steps ͑Tafel-Volmer-Heyrovsky͒ simultaneously, as well as more limiting rate expressions based on two-step pathways.The analysis is based on our recently developed graph-theoretic approach that provides accurate rate laws by exploiting the electrical analogy of the reaction network.The accuracy of the resulting rate expressions, as well as their asymmetric potential dependence, for both HOR and HER is illustrated here based on step kinetics provided in the literature for Pt catalyst in 0.5 M NaOH solution.
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Cited by
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Kuhl, K. P., Cave, E. R., Abram, D. N., & Jaramillo, T. F. (2012) · Energy & Environmental Science · doi:10.1039/c2ee21234j · Cited by 3,160
Wang, P., Zhang, X., Zhang, J., Wan, S., Guo, S., Lu, G., Yao, J., & Huang, X. (2017) · Nature Communications · doi:10.1038/ncomms14580 · Cited by 860
Cobalt‐doping in molybdenum‐carbide nanowires toward efficient electrocatalytic hydrogen evolution
Lin, H., Liu, N., Shi, Z., Guo, Y., Tang, Y., & Gao, Q. (2016) · Advanced Functional Materials · doi:10.1002/adfm.201600915 · Cited by 460
Hu, C., Song, E., Wang, M., Chen, W., Huang, F., Feng, Z., Liu, J., & Wang, J. (2021) · Advanced Science · doi:10.1002/advs.202001881 · Cited by 144
Hydrogen Evolution Reaction Activity of Heterogeneous Materials: A Theoretical Model
Ekspong, J., Gracia-Espino, E., & Wågberg, T. (2020) · The Journal of Physical Chemistry C · doi:10.1021/acs.jpcc.0c05243 · Cited by 87
Metadata
- Authors
- Vilekar, S. A., Fishtik, I., & Datta, R.
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 2010
- Volume
- 157
- Issue
- 7
- Pages
- B1040
- ISSN
- 0013-4651 (ISSN-L)
- OpenAlex
- W2090818530
- Cited by
- 170
- References
- 0
- FWCI
- 2.37
- Type
- journal article
- Language
- en
- Open access
- bronze
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