MnS–MnO heterogeneous nanocube@N,S-doped carbon as a highly efficient bifunctional water splitting electrocatalyst  

作　　者：Xue-Qian Wang Xiang-Ying Ma Wang-Zhi Wu Hui-Bing He Nan-Nan Wang Ren-Ji Zheng Shao-Jian Ma Yan-Qiu Zhu Pei-Kang Shen Jin-Liang Zhu 

机构地区：[1]School of Resources,Environment and Materials,State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures,College of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China [2]School of Chemistry and Chemical Engineering, Guangxi MinzuUniversity, Nanning 530006, China [3]School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China

出　　处：《Rare Metals》2024年第5期1977-1988,共12页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.51962002);Natural Science Foundation of Guangxi(No.2022GXNSFAA035463)。

摘　　要：A stable,efficient,and economical bifunctional electrolytic catalyst would be incredibly beneficial for the development of hydrogen production by electrocatalytic water splitting.In this study,we synthesized a novel MnS–MnO heterogeneous nanocube@N,S-doped carbon(MnS–MnO@NSC).MnS–MnO nanocubes possess rich heterogeneous interfaces and plentiful catalytic active sites to promote electrochemical reactions,while the N,S-doped carbon shell possesses excellent conductivity and catalytic properties and protects the nanocubes.MnS–MnO@NSC exhibited excellent electrochemical properties as an effective bifunctional electrocatalyst for the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in KOH solution.In the HER,the overpotential was as low as 124 mV at a current density of 10 mA·cm^(-2)while in the OER,it was only 340 mV at 100 mA·cm^(-2)under the same conditions.In addition,a MnS–MnO@NSC||MnS–MnO@NSC electrolyzer exhibited almost comparable activity and higher steadiness than those exhibited by the state-of-the-art Pt/C||RuO_(2)/C system for full water splitting in KOH solution.

关 键 词：Manganese sulfide Manganese oxide Doped carbon Heterogeneous nanocube Water splitting 

分 类 号：TQ116.2[化学工程—无机化工] TQ426