electroreduction. By evaluating 11 catalysts across a wide pH range (acidic to alkaline), we reveal strong correlations between overpotential and PZC for multiple reaction pathways, including CO, formate, and multicarbon products. Through integrated electrochemical analysis, isotope labeling, in situ spectroscopy, and computational modeling, we show that PZC fundamentally regulates electron-transfer kinetics. At a given negetive potential, a catalyst with a more positive PZC introduces a larger electrostatic contribution to the electron energy to offset their lower chemical potential, which accelerates electron transfer to both the catalyst surface and reaction intermediates. This PZC-based kinetic descriptor further extends to the acidic hydrogen evolution reaction, highlighting its broad applicability across electrocatalytic systems.
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Wenhao Ren
Xiaowan Bai
Min Zheng
Journal of the American Chemical Society
The University of Adelaide
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Ren et al. (Mon,) studied this question.
www.synapsesocial.com/papers/69fbe382164b5133a91a2c4a — DOI: https://doi.org/10.1021/jacs.6c02109
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