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Impedance spectroscopy of H and OH adsorption on stepped single-crystal platinum electrodes in alkaline and acidic media
Abstract
The adsorption kinetics of hydrogen and hydroxyl on Pt(111) and stepped Pt[n(111) × (110)] electrodes with n = 29, 9, and 4 in acidic and alkaline electrolytes have been studied using impedance spectroscopy. We found a potential dependent charge transfer resistance, R(ct), (∼30 Ω cm(2) to ∼1 kΩ cm(2)) for hydrogen underpotential deposition in alkaline media (0.05 M NaOH), whereas in acidic media (0.025 M HClO(4)) R(ct) was too low to be determined accurately. Assuming simple (mean field) isotherms to fit our data, we obtain repulsive interactions between H(upd) at the (111) terrace and effective attractive interactions at the steps. The adsorption of OH on (111) terraces is fast in both acidic and alkaline media.
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Cited by
Zheng, Y., Jiao, Y., Vasileff, A., & Qiao, S. (2018) · Angewandte Chemie International Edition · doi:10.1002/anie.201710556 · Cited by 1,489
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McCrum, I. T., & Koper, M. T. M. (2020) · Nature Energy · doi:10.1038/s41560-020-00710-8 · Cited by 818
Self-citationHydrogen Evolution and Oxidation: Mechanistic Studies and Material Advances
Tian, X., Zhao, P., & Sheng, W. (2019) · Advanced Materials · doi:10.1002/adma.201808066 · Cited by 751
Chen, W., Wu, B., Wang, Y., Zhou, W., Li, Y., Liu, T., Xie, C., Xu, L., Du, S., Song, M., et al. (2021) · Energy & Environmental Science · doi:10.1039/d1ee01395e · Cited by 587
Single atom tungsten doped ultrathin α-Ni(OH)2 for enhanced electrocatalytic water oxidation
Yan, J., Kong, L., Ji, Y., White, J., Li, Y., Zhang, J., An, P., Liu, S., Lee, S.-T., & Ma, T. (2019) · Nature Communications · doi:10.1038/s41467-019-09845-z · Cited by 561
Metadata
- Authors
- Schouten, K. J. P., van der Niet, M. J. T. C., & Koper, M. T. M.
- Venue
- Physical Chemistry Chemical Physics
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2010
- Volume
- 12
- Issue
- 46
- Pages
- 15217
- ISSN
- 1463-9076 (ISSN-L)
- 1463-9084
- OpenAlex
- W1995037614
- Cited by
- 177
- References
- 0
- FWCI
- 3.26
- Type
- journal article
- Language
- en
- Open access
- closed
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- Schouten, K. J. P., van der Niet, M. J. T. C., & Koper, M. T. M. (2010). Impedance spectroscopy of H and OH adsorption on stepped single-crystal platinum electrodes in alkaline and acidic media. Physical Chemistry Chemical Physics. https://doi.org/10.1039/c0cp00104j
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