Carbon-supported high-entropy Co-Zn-Cd-Cu-Mn sulfide nanoarrays promise high-performance overall water splitting

作     者：Yuanting Lei Lili Zhang Wenjing Xu Chengli Xiong Wenxing Chen Xu Xiang Bing Zhang Huishan Shang Yuanting Lei;Lili Zhang;Wenjing Xu;Chengli Xiong;Wenxing Chen;Xu Xiang;Bing Zhang;Huishan Shang

作者机构：School of Chemical EngineeringZhengzhou UniversityZhengzhou 450001China Energy&Catalysis CenterSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijing 100029China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第7期

页      面：6054-6061页

核心收录：

学科分类：07[理学] 08[工学] 070304[理学-物理化学(含∶化学物理)] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：The authors thank the National Natural Science Foundation of China(No.U1804140) China Postdoctoral Science Foundation(No.2021M702939)for support. 

主　　题：electrocatalysis high-entropy metal sulfides oxygen evolution reaction hydrogen evolution reaction low-temperature cation exchange 

摘      要：Transition metal sulfides with homogeneous multi-metallic elements promise high catalytic performance for water electrolysis owing to the unique structure and highly tailorable electrochemical property.Most existing synthetic routes require high temperature to ensure the uniform mixing of various elements,making the synthesis highly challenging.Here,for the first-time novel carbon fiber supported high-entropy Co-Zn-Cd-Cu-Mn sulfide(CoZnCdCuMnS@CF)nanoarrays are fabricated by the mild cation exchange strategy.Benefiting from the synergistic effect among multiple metals and the strong interfacial bonding between high-entropy Co-Zn-Cd-Cu-Mn sulfide nanoarrays and the carbon fiber support,CoZnCdCuMnS@CF exhibits superior catalytic activity and stability toward overall water splitting in alkaline medium.Impressively,CoZnCdCuMnS@CF only needs low overpotentials of 173 and 220 mV to reach the current density of 10 mA•cm^(−2),with excellent durability for over 70 and 113 h for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)respectively.More importantly,the bifunctional electrode(CoZnCdCuMnS@CF||CoZnCdCuMnS@CF)for overall water splitting can deliver a small cell voltage of 1.63 V to afford 10 mA•cm^(−2) and exhibit outstanding stability of negligible decay after 73 h continuous operation.This work provides a viable synthesis route toward advanced high-entropy materials with great potential applications.