Bifunctional Fe-doped CoP@Ni_(2)P heteroarchitectures for highefficient water electrocatalysis  

作　　者：Zhongxin Duan Depeng Zhao Yuchen Sun Xiaojie Tan Xiang Wu 

机构地区：[1]School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,China

出　　处：《Nano Research》2022年第10期8865-8871,共7页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52172218).

摘　　要：It is important to develop economical and durable electrocatalysts for sustainable energy conversion technology.However,the current catalysts still suffer from insufficient hydrogen adsorption energy.Herein,we report a kind of novel bi-phosphide catalyst through constructing heterogeneous structures and cation doping.The obtained sample delivers an outstanding hydrogen evolution reaction(HER)performance at all pH range.As oxygen evolution reaction(OER)electrocatalyst,Fe-CoP@Ni_(2)P samples show an overpotential of 237 mV at 50 mA·cm^(−2) in alkaline solution.For electrolysis of water,Fe-CoP@Ni_(2)P catalysts deliver a cell voltage of 1.59 V at 50 mA·cm^(−2) and long durability.Furthermore,density functional theory(DFT)calculation further confirms that the doped heterostructure promotes Gibbs free energy for hydrogen adsorption.And the significant increase in the density of total states(DOS)also enhances the catalytic activity of HER.

关 键 词：Fe doping PHOSPHIDE HETEROSTRUCTURE all pH range hydrogen evolution reaction(HER) ELECTROLYSIS 

分 类 号：O64[理学—物理化学]