Construction of a Three-Phase MnS2/Co4S3/Ni3S2 Heterostructure for Boosting Oxygen Evolution

被引：4

作者：

Gao, Haoran ^{[1
,2
]}

Xu, Zhikun ^{[3
]}

Lin, Shuangyan ^{[1
,2
]}

Sun, Yujing ^{[2
]}

Li, Lin ^{[1
]}

机构：

[1] Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China

[2] Guangdong Univ Petrochem Technol, Sch Chem, Maoming 525000, Guangdong, Peoples R China

[3] Guangdong Univ Petrochem Technol, Sch Sci, Maoming 525000, Guangdong, Peoples R China

来源：

LANGMUIR | 2024年 / 40卷 / 40期

关键词：

NI FOAM; ELECTROCATALYST; ARRAYS; CATALYSTS; CO; NANOSHEETS; INTERFACE; ELECTRODE; NITRIDE; STORAGE;

D O I：

10.1021/acs.langmuir.4c02475

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The rational construction of highly efficient electrocatalysts for the oxygen evolution reaction (OER) plays a critical role in energy conversion systems. Designing heterostructures is a common and effective strategy to improve the performance of electrocatalysts. In this paper, an MnS2/Co4S3/Ni3S2 heterostructure was synthesized on Ni foam using a one-step vulcanization method. It provides a modified electronic structure and plentiful three-phase heterogeneous interfaces that can effectively enrich the active sites and accelerate electron transfer, thereby improving the OER activity. Thanks to the heterostructure, the MnS2/Co4S3/Ni3S2 exhibits a low overpotential of 265 and 304 mV for the OER to reach current densities of 50 and 100 mA/cm(2), respectively. Furthermore, the surface reconstruction of MnS2/Co4S3/Ni3S2 has been investigated, which revealed the formation of metal hydr(oxy)oxides evolved during the OER process. This work provides a facile strategy for constructing three-phase heterostructures, shedding light on the development of high-performance, nonprecious metal-based OER electrocatalysts.

引用

页码：21077 / 21085

页数：9

共 48 条

[1] Bifunctional MoC/NiC@N-doped reduced graphene oxide nano electrocatalyst for simultaneous production of hydrogen and oxygen through efficient overall electrochemical water splitting [J].