Xue Ruyu, Feng Zhe, Wang Yantao, Huang Junfeng, Dou Wei, Xu Cailing
State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
Inorg Chem. 2024 Aug 5;63(31):14804-14810. doi: 10.1021/acs.inorgchem.4c02804. Epub 2024 Jul 25.
The development of oxygen evolution reaction (OER) electrocatalysts is essential for the production of green hydrogen from water electrolysis, but it is challenging. Herein, ruthenium (Ru) single-atom-modified Co-HHTP (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) (Ru@Co-HHTP) was prepared via a solvothermal and ion exchange method. Systematic experiments highlight that the atomically dispersed Ru can optimize the electronic structure and electronic conductivity of Co-HHTP. As a result, the obtained Ru@Co-HHTP shows a low overpotential of 247 mV at 100 mA cm, a small Tafel slope of 38.14 mV dec, and good stability, which are superior to those of Co-HHTP, commercial IrO, and most previously reported catalysts. This work provides a new avenue for designing highly efficient elongated OER electrocatalysts.
析氧反应（OER）电催化剂的开发对于通过水电解生产绿色氢气至关重要，但具有挑战性。在此，通过溶剂热和离子交换法制备了钌（Ru）单原子修饰的Co-HHTP（HHTP = 2,3,6,7,10,11-六羟基三亚苯）（Ru@Co-HHTP）。系统实验表明，原子分散的Ru可以优化Co-HHTP的电子结构和电导率。结果，所获得的Ru@Co-HHTP在100 mA cm时显示出247 mV的低过电位，38.14 mV dec的小塔菲尔斜率和良好的稳定性，优于Co-HHTP、商业IrO以及大多数先前报道的催化剂。这项工作为设计高效的析氧反应电催化剂提供了一条新途径。
