@article{4dacb26928a24de78bd233a881ec27e1,
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 = "Funding Information: Authors acknowledge funding from the Natural Gas Innovation Fund, the Natural Sciences and Engineering Research Council (NSERC) of Canada, the Natural Resources Canada Clean Growth Program, and the Ontario Research Fund–Research Excellence program. All DFT computations were performed on the Niagara supercomputer of the SciNet HPC Consortium. SciNet is funded by the Canada Foundation for Innovation, the Government of Ontario, Ontario Research Fund Research Excellence Program, and the University of Toronto. N.W. and H.Y.L. acknowledge support from the National Natural Science Foundation of China (NSFC Nos. 51771132, 52204320). S.-F.H. acknowledges support from National Science and Technology Council, Taiwan. Contract No. NSTC 110-2113-M-009-007-MY2 and 111-2628-M-A49-007. The authors thank Ms. C.-Y. Chien of the National Science and Technology Council (National Taiwan University) for the assistance in FE-TEM and EDS experiments. J.A. acknowledges Natural Sciences and Engineering Research Council (NSERC) of Canada, Vanier Canada Graduate Scholarship. W.Y.N. acknowledges the financial support of Postdoc.Mobility Fellowship from Swiss National Science Foundation (SNSF) (No. P500PN_202906). Funding Information: Authors acknowledge funding from the Natural Gas Innovation Fund, the Natural Sciences and Engineering Research Council (NSERC) of Canada, the Natural Resources Canada Clean Growth Program, and the Ontario Research Fund-Research Excellence program. All DFT computations were performed on the Niagara supercomputer of the SciNet HPC Consortium. SciNet is funded by the Canada Foundation for Innovation, the Government of Ontario, Ontario Research Fund Research Excellence Program, and the University of Toronto. N.W. and H.Y.L. acknowledge support from the National Natural Science Foundation of China (NSFC Nos. 51771132, 52204320). S.-F.H. acknowledges support from National Science and Technology Council, Taiwan. Contract No. NSTC 110-2113-M-009-007-MY2 and 111-2628-M-A49-007. The authors thank Ms. C.-Y. Chien of the National Science and Technology Council (National Taiwan University) for the assistance in FE-TEM and EDS experiments. J.A. acknowledges Natural Sciences and Engineering Research Council (NSERC) of Canada, Vanier Canada Graduate Scholarship. W.Y.N. acknowledges the financial support of Postdoc.Mobility Fellowship from Swiss National Science Foundation (SNSF) (No. P500PN_202906). Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",
year = "2023",
month = apr,
day = "12",
doi = "10.1021/jacs.2c12431",
language = "English (US)",
volume = "145",
pages = "7829--7836",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "14",
}