MOF-derived cobalt phosphide as highly efficient electrocatalysts for hydrogen evolution reaction

被引：35
作者：
Duan, Donghong [1 ]
Feng, Jiarong [1 ]
Liu, Shibin [1 ]
Wang, Yunfang [1 ]
Zhou, Xianxian [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Chem & Chem Engn, Taiyuan 030024, Peoples R China
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2021年 / 892卷
关键词：
Cobalt phosphide; Hydrogen evolution reaction; Metal phosphides; Metal-organic frameworks; Electrocatalytic activity;
D O I：
10.1016/j.jelechem.2021.115300
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Given the scarcity and high cost of metal Pt, the search for cheap and readily available non-precious metal catalysts remains the key to solving hydrogen evolution reactions (HER) today. Transition-metal phosphides (TMPs) have been widely studied in recent years due to their excellent catalytic activity. In this work, we using Co-based metal-organic framework (MOF) as the precursor, prepared two kinds of cobalt phosphide (CoP/C) by direct phosphating and indirect phosphating methods, which showed good electrochemical performance of HER. The Di-CoP/C showed lower overpotential of 136 mV at 10 mA cm-2 in the acid electrolyte, and the slope of Tafel was 49.3 mV dec-1. At the same time, the catalyst showed excellent stability.
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页数：9
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