Huang Yuan, Jiang Li-Wen, Shi Bu-Yan, Ryan Kevin M, Wang Jian-Jun
Institute of Crystal Materials, State Key Laboratory of Crystal Materials, Shenzhen Research Institute of Shandong University, Shandong University, Jinan, Shandong, 250100, China.
Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick, Ireland.
Adv Sci (Weinh). 2021 Sep;8(18):e2101775. doi: 10.1002/advs.202101775. Epub 2021 Jul 24.
The electronic structure of active sites is critically important for electrochemical reactions. Here, the authors report a facile approach to independently regulate the electronic structure of Fe in Ni Fe Se by P doping. The resulting electrode exhibits superior catalytic performance for the oxygen evolution reaction (OER) showing a low overpotential (238 mV at 100 mA cm , 185 mV at 10 mA cm ) and an impressive durability in an alkaline medium. Additionally, the mass activity of 328.19 A g and turnover frequency (TOF) of 0.18 s at an overpotential of 500 mV are obtained for P─Ni Fe Se which is much higher than that of Ni Fe Se and RuO . This work presents a new strategy for the rational design of efficient electrocatalysts for OER.
活性位点的电子结构对于电化学反应至关重要。在此，作者报告了一种通过P掺杂独立调节NiFeSe中Fe电子结构的简便方法。所得电极对析氧反应（OER）表现出优异的催化性能，具有低过电位（100 mA cm²时为238 mV，10 mA cm²时为185 mV）以及在碱性介质中令人印象深刻的耐久性。此外，P-NiFeSe在500 mV过电位下的质量活性为328.19 A g，周转频率（TOF）为0.18 s⁻¹，远高于NiFeSe和RuO₂。这项工作为合理设计高效的OER电催化剂提出了一种新策略。
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