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Updated: Jul 17, 2026

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Published on: November 7, 2025
Cu/Mn-modulated self-supported Ni catalyst with a hierarchical architecture for efficient ethanol oxidation-coupled
Pusen Lu1, Zhouyi Li1, Xiaoliang Ren1
1Institute of Hydrogen Energy for Carbon Peaking and Carbon Neutralization, School of Electronic Science and Engineering (School of Microelectronics), South China Normal University, Foshan 528225, China. fengjiang@m.scnu.edu.cn.
None:
Replacing the oxygen evolution reaction with the ethanol oxidation reaction offers a promising route to reduce the energy demand of hydrogen production while co-generating value-added chemicals. Herein, we report a self-supported Cu/Mn-modulated Ni electrode prepared by high-current-density electrodeposition as an efficient non-precious-metal catalyst for ethanol oxidation-coupled hydrogen production. Benefiting from the hierarchical nanostructure formed during hydrogen-evolution-assisted deposition and the electronic modulation of the Ni framework by Cu and Mn, the electrode exhibits a low potential at 10 mA cm-2 of 1.294 V versus RHE, a faradaic efficiency of 93.49% for acetate formation, and long-term stability over 400 h. When integrated into a silicon photovoltaic-electrochemical system, it delivers a solar-to-chemical efficiency of 0.55% and a hydrogen production rate of 1.1 mmol cm-2 h-1 with negligible oxygen evolution. These results highlight the potential of low-cost Ni-based electrodes for coupling selective alcohol oxidation with renewable hydrogen production.
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