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Cited by 314

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Doping Shortens the Metal/Metal Distance and Promotes OH Coverage in Non-Noble Acidic Oxygen Evolution Reaction Catalysts

Open access
Wang, Ning, Ou, Pengfei, Miao, Rui Kai, Chang, Yuxin, Wang, Ziyun, Hung, Sung-Fu, Abed, Jehad, Ozden, Adnan, Chen, Hsuan-Yu, Wu, Heng-Liang, Huang, Jianan Erick, Zhou, Daojin, Ni, Weiyan, Fan, Lizhou, Yan, Yu, Peng, Tao, Sinton, David, Liu, Yongchang, Liang, Hongyan, Sargent, Edward H.·2023·Journal of the American Chemical Society

Abstract

Acidic water electrolysis enables the production of hydrogen for use as a chemical and as a fuel. The acidic environment hinders water electrolysis on non-noble catalysts, a result of the sluggish kinetics associated with the adsorbate evolution mechanism, reliant as it is on four concerted proton-electron transfer steps. Enabling a faster mechanism with non-noble catalysts will help to further advance acidic water electrolysis. Here, we report evidence that doping Ba cations into a Co 3 O 4 framework to form Co 3– x Ba x O 4 promotes the oxide path mechanism and simultaneously improves activity in acidic electrolytes. Co 3– x Ba x O 4 catalysts reported herein exhibit an overpotential of 278 mV at 10 mA/cm 2 in 0.5 M H 2 SO 4 electrolyte and are stable over 110 h of continuous water oxidation operation. We find that the incorporation of Ba cations shortens the Co–Co distance and promotes OH adsorption, findings we link to improved water oxidation in acidic electrolyte.

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Metadata

Authors
Wang, N., Ou, P., Miao, R. K., Chang, Y., Wang, Z., Hung, S.-F., Abed, J., Ozden, A., Chen, H.-Y., Wu, H.-L., Huang, J. E., Zhou, D., Ni, W., Fan, L., Yan, Y., Peng, T., Sinton, D., Liu, Y., Liang, H., & Sargent, E. H.
Venue
Journal of the American Chemical Society
Published
2023-04-03
Volume
145
Issue
14
Pages
7829-7836
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W4362506256
Cited by
314
References
3
FWCI
14.70
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Doping Shortens the Metal/Metal Distance and Promotes OH Coverage in Non-Noble Acidic Oxygen Evolution Reaction Catalysts. https://app.cochat.ai/papers/10.1021/jacs.2c12431
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Wang, N., Ou, P., Miao, R. K., Chang, Y., Wang, Z., Hung, S.-F., Abed, J., Ozden, A., Chen, H.-Y., Wu, H.-L., Huang, J. E., Zhou, D., Ni, W., Fan, L., Yan, Y., Peng, T., Sinton, D., Liu, Y., Liang, H., & Sargent, E. H. (2023). Doping Shortens the Metal/Metal Distance and Promotes OH Coverage in Non-Noble Acidic Oxygen Evolution Reaction Catalysts. Journal of the American Chemical Society. https://doi.org/10.1021/jacs.2c12431

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.