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

Ning Wang; Pengfei Ou; Rui Kai Miao; Yuxin Chang; Ziyun Wang; Sung Fu Hung; Jehad Abed; Adnan Ozden; Hsuan Yu Chen; Heng Liang Wu; Jianan Erick Huang; Daojin Zhou; Weiyan Ni; Lizhou Fan; Yu Yan; Tao Peng; David Sinton; Yongchang Liu; Hongyan Liang; Edward H. Sargent

doi:10.1021/jacs.2c12431

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

Ning Wang, Pengfei Ou, Rui Kai Miao, Yuxin Chang, Ziyun Wang, Sung Fu Hung, Jehad Abed, Adnan Ozden, Hsuan Yu Chen, Heng Liang Wu, Jianan Erick Huang, Daojin Zhou, Weiyan Ni, Lizhou Fan, Yu Yan, Tao Peng, David Sinton, Yongchang Liu, Hongyan Liang^*, Edward H. Sargent^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

99 Scopus citations

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 Co₃O₄ framework to form Co_3-xBa_xO₄ promotes the oxide path mechanism and simultaneously improves activity in acidic electrolytes. Co_3-xBa_xO₄ catalysts reported herein exhibit an overpotential of 278 mV at 10 mA/cm² in 0.5 M H₂SO₄ 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.

Original language	English
Pages (from-to)	7829-7836
Number of pages	8
Journal	Journal of the American Chemical Society
Volume	145
Issue number	14
DOIs	https://doi.org/10.1021/jacs.2c12431
State	Published - 12 Apr 2023

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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, 145(14), 7829-7836. https://doi.org/10.1021/jacs.2c12431

@article{2912176fc05f47d8997a1b97a5390f40,

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

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 Co3O4 framework to form Co3-xBaxO4 promotes the oxide path mechanism and simultaneously improves activity in acidic electrolytes. Co3-xBaxO4 catalysts reported herein exhibit an overpotential of 278 mV at 10 mA/cm2 in 0.5 M H2SO4 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.",

author = "Ning Wang and Pengfei Ou and Miao, {Rui Kai} and Yuxin Chang and Ziyun Wang and Hung, {Sung Fu} and Jehad Abed and Adnan Ozden and Chen, {Hsuan Yu} and Wu, {Heng Liang} and Huang, {Jianan Erick} and Daojin Zhou and Weiyan Ni and Lizhou Fan and Yu Yan and Tao Peng and David Sinton and Yongchang Liu and Hongyan Liang and Sargent, {Edward H.}",

note = "Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

year = "2023",

month = apr,

day = "12",

doi = "10.1021/jacs.2c12431",

language = "English",

volume = "145",

pages = "7829--7836",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

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Wang, N, Ou, P, Miao, RK, Chang, Y, Wang, Z, Hung, SF, Abed, J, Ozden, A, Chen, HY, Wu, HL, Huang, JE, Zhou, D, Ni, W, Fan, L, Yan, Y, Peng, T, Sinton, D, Liu, Y, Liang, H & Sargent, EH 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, vol. 145, no. 14, pp. 7829-7836. https://doi.org/10.1021/jacs.2c12431

TY - JOUR

T1 - Doping Shortens the Metal/Metal Distance and Promotes OH Coverage in Non-Noble Acidic Oxygen Evolution Reaction Catalysts

AU - Wang, Ning

AU - Ou, Pengfei

AU - Miao, Rui Kai

AU - Chang, Yuxin

AU - Wang, Ziyun

AU - Hung, Sung Fu

AU - Abed, Jehad

AU - Ozden, Adnan

AU - Chen, Hsuan Yu

AU - Wu, Heng Liang

AU - Huang, Jianan Erick

AU - Zhou, Daojin

AU - Ni, Weiyan

AU - Fan, Lizhou

AU - Yan, Yu

AU - Peng, Tao

AU - Sinton, David

AU - Liu, Yongchang

AU - Liang, Hongyan

AU - Sargent, Edward H.

PY - 2023/4/12

Y1 - 2023/4/12

N2 - 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 Co3O4 framework to form Co3-xBaxO4 promotes the oxide path mechanism and simultaneously improves activity in acidic electrolytes. Co3-xBaxO4 catalysts reported herein exhibit an overpotential of 278 mV at 10 mA/cm2 in 0.5 M H2SO4 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.

AB - 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 Co3O4 framework to form Co3-xBaxO4 promotes the oxide path mechanism and simultaneously improves activity in acidic electrolytes. Co3-xBaxO4 catalysts reported herein exhibit an overpotential of 278 mV at 10 mA/cm2 in 0.5 M H2SO4 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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U2 - 10.1021/jacs.2c12431

DO - 10.1021/jacs.2c12431

M3 - Article

C2 - 37010254

AN - SCOPUS:85151858704

SN - 0002-7863

VL - 145

SP - 7829

EP - 7836

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 14

ER -

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

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