Su Yibo, Liu Bo, Shi Zijun, Yan Mei, Ma Tengfei
School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China.
Bureau of Science & Technology Talent, Ordos High-Tech Industrial Development Zone, Ordos 017000, China.
Molecules. 2025 Feb 25;30(5):1046. doi: 10.3390/molecules30051046.
The electrocatalysts of heteroatom-doped non-precious metal oxide materials are of great significance for efficient and low-cost electrochemical water-splitting systems. Herein, an innovative Fe-doped CoO nanoflake (Fe-CoO/NF) on nickel foam has been developed, which exhibits excellent electrocatalytic activity for both hydrogen evolution reactions (HERs) and oxygen evolution reactions (OERs). Benefiting from the synergy of the charge redistribution and d-band center shift caused by doping engineering, the as-obtained Fe-CoO/NF shows both excellent HER ( = 196 mV) and OER ( = 290 mV) activities with low Tafel slopes (109 mV dec for HER and 49 mV dec for OER, respectively) and excellent stability. This work provides an effective method for designing and synthesizing bifunctional electrocatalysts with high activity and stability of metal oxide hybrids for the HER/OER.
杂原子掺杂的非贵金属氧化物材料的电催化剂对于高效且低成本的电化学水分解系统具有重要意义。在此，已开发出一种创新性的泡沫镍负载铁掺杂氧化钴纳米片（Fe-CoO/NF），其对析氢反应（HERs）和析氧反应（OERs）均表现出优异的电催化活性。得益于掺杂工程引起的电荷重新分布和d带中心位移的协同作用，所制备的Fe-CoO/NF展现出优异的HER（η = 196 mV）和OER（η = 290 mV）活性，具有低塔菲尔斜率（HER为109 mV dec，OER为49 mV dec）以及出色的稳定性。这项工作为设计和合成用于HER/OER的具有高活性和稳定性的金属氧化物杂化双功能电催化剂提供了一种有效方法。
