Revealing component synergy of Ni‒Fe/black phosphorous composites synthesized by self-designed electrochemical method for enhancing photoelectrocatalytic oxygen evolution reaction  

作　　者：He Xiao Shoufeng Xue Zimei Fu Man Zhao Li Zhang Junming Zhang Haishun Wu Jianfeng Jia Nianjun Yang 

机构地区：[1]Key Laboratory of Magnetic Molecules&Magnetic Information Materials(Ministry of Education),School of Chemistry and Materials Science,Shanxi Normal University,Taiyuan 030032,China [2]Department of Chemistry,Hasselt University,3590 Diepenbeek,Belgium

出　　处：《Frontiers of Materials Science》2023年第2期143-153,共11页材料学前沿（英文版）

基　　金：This work was financially supported by the National Natural Science Foundation of China(Grant No.21571119);the Applied Basic Research Project of Shanxi Province(Grant Nos.201901D211393 and 201901D211398);the Natural Science Foundation of Shanxi Province(Grant No.20210302124473);the Scientific and Technological Innovation Programs of Higher Education Institution in Shanxi(Grant No.2019L0466);the Graduate Education Innovation Project of Shanxi Province(Grant No.2021Y480);the China postdoctoral Science Foundation(Grant No.2021M691366);the Graduate Education Innovation Project of Shanxi Normal University(Grant No.2021XSY038);the 1331 Engineering of Shanxi Province.

摘　　要：Developing high-activity and low-cost catalysts is the key to eliminate the limitation of sluggish anodic oxygen evolution reaction(OER)during electrocatalytic overall water splitting.Herein,Ni‒Fe/black phosphorous(BP)composites are synthesized using a simple three-electrode system,where exfoliation of bulky BP and synthesis of NiFe composites are simultaneously achieved.Under light illumination,the optimized Ni‒Fe/BP composite exhibits excellent photoelectrocatalytic OER performance(e.g.,the overpotential is 58 mV lower than a commercial RuO_(2) electrocatalyst at a current density of 10 mA·cm^(-2)).The electron transfer on this composite is proved to follow a Ni‒BP‒Fe pathway.The electronic structure of this Ni‒Fe/BP composite is effectively regulated,leading to optimized adsorption strength of the intermediate OH*and improved intrinsic activity for the OER.Together with active sites on the support,this Ni‒Fe/BP composite possesses abundant electrochemical active sites and a bug surface area for the OER.The introduction of light further accelerates the electrocatalytic OER.This work provides a novel and facile method to synthesize high-performance metal/BP composites as well as the approaches to reveal their OER mechanisms.

关 键 词：black phosphorous (photo-)electrocatalysis oxygen evolution reaction 

分 类 号：TQ426[化学工程]