Two-dimensional ultrathin nanosheets over mackinawite FeS for efficient electrochemical N_(2) reduction  

作　　者：Jing Zhang Yingying Guo Haiyang Li Jing Guo Rui Zheng Shuai Niu Fang Wang 

机构地区：[1]School of Chemistry and Materials Science,Key Laboratory of Magnetic Molecules and Magnetic Information Materials(Ministry of Education),Shanxi Normal University,Taiyuan 031000,China [2]College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China [3]School of Physics and Information Engineering,Shanxi Normal University,Taiyuan 031000,China [4]Chemistry and Environmental Science College,Key Laboratory of Advanced Materials Chemistry and Devices of Higher Education Institutions in Inner Mongolia Autonomous Region,Inner Mongolia Normal University,Hohhot 010022,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第4期936-943,共8页矿物冶金与材料学报(英文版)

基　　金：financially supported by the Fundamental Research Program of Shanxi Province, China (Nos. 202303021222190, 202203021212243, and 2023L160);the National Natural Science Foundation of China (No. 22202151 and 22209033);the Fundamental Research Program of Shanxi Normal University, China (No. J CYJ2023015)。

摘　　要：Electrocatalytic N_(2)reduction reaction (NRR) has been considered as a promising and alternative strategy for the synthesis of NH_(3),which will contribute to the goal of carbon neutrality and sustainability.However,this process often suffers from the barrier for N_(2)activation and competitive reactions,resulting in poor NH_(3)yield and low Faraday efficiency (FE).Here,we report a two-dimensiona(2D) ultrathin FeS nanosheets with high conductivity through a facile and scalable method under mild condition.The synthesized FeS catalysts can be used as the work electrode in the electrochemical NRR cell with N_(2)-saturated Na_(2)SO_(4)electrolyte.Such a catalyst shows a NH_(3)yield of 9.0μg·h^(-1)·mg^(-1)(corresponding to 1.47×10^(-4)μmol·s^(-1)·cm^(-2)) and a high FE of 12.4%,which significantly outperformed the other most NRR catalysts.The high catalytic performance of FeS can be attributed to the 2D mackinawite structure,which provides a new insight to explore low-cost and high-performance Fe-based electrocatalysts,as well as accelerates the practical application of the NRR.

关 键 词：electrocatalysis electrocatalytic nitrogen reduction reaction FeS nanosheets faraday efficiency 

分 类 号：O64[理学—物理化学]