Abstract：
Developing a fast and highly active oxygen evolution reaction (OER) catalyst to change energy kinetics technology is essential for making clean energy. Herein, we prepare three-dimensional (3D) hollow Mo-doped amorphous FeOOH (Mo-FeOOH) based on the precatalyst MoS2 /FeC2 O4 via in situ reconstruction strategy. Mo-FeOOH exhibits promising OER performance. Specifically, it has an overpotential of 285 mV and a durability of 15 h at 10 mA cm-2 . Characterizations indicate that Mo was included inside the FeOOH lattice, and it not only modifies the electronic energy levels of FeOOH but also effectively raises the inherent activity of FeOOH for OER. Additionally, in situ Raman analysis indicates that FeC2 O4 gradually transforms into the FeOOH active site throughout the OER process. This study provides ideas for designing in situ reconstruction strategies to prepare heteroatom doping catalysts for high electrochemical activity.
摘要：
开发快速且高活性的析氧反应（OER）催化剂以改变能量动力学技术对于制造清洁能源至关重要。在这里，我们通过原位重构策略制备了基于预催化剂MoS2/FeC2O4的三维（3D）中空Mo掺杂非晶态FeOOH（Mo-FeOOH）。Mo-FeOOH表现出良好的OER性能。具体来说,它具有285mV的过电位和在10mAcm-2时15h的耐久性。表征表明Mo包含在FeOOH晶格中，它不仅改变了FeOOH的电子能级，而且有效地提高了FeOOH对OER的固有活性。此外,原位拉曼分析表明，在整个OER过程中，FeC2O4逐渐转变为FeOOH活性位点。本研究为设计原位重构策略制备高电化学活性的杂原子掺杂催化剂提供了思路。
