Graphene-templated growth of MoS2-Ni3S2 heterostructures as efficient electrocatalysts for overall water splitting

被引：13

作者：

Yu, Hongliang ^{[1
]}

Chen, Chen ^{[1
]}

Yu, Ningbo ^{[1
]}

Feng, Keren ^{[1
]}

Zhang, Xinyi ^{[1
]}

Cai, Ning ^{[1
]}

Xue, Yanan ^{[1
]}

Li, Hui ^{[1
]}

Wang, Jianzhi ^{[1
,2
]}

Yu, Faquan ^{[1
,2
]}

机构：

[1] Wuhan Inst Technol, Key Lab Green Chem Proc, Minist Educ, Hubei Key Lab Novel Reactor & Green Chem Technol,H, Wuhan 430073, Peoples R China

[2] Wuhan Inst Technol, Liu Fang Campus 206,Guanggu 1st Rd, Wuhan 430205, Hubei, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2023年 / 658卷

基金：

中国国家自然科学基金;

关键词：

2D material; Heterostructure; Graphene; Overall water splitting; MoS2; HIGH-PERFORMANCE; NI FOAM; BIFUNCTIONAL ELECTROCATALYSTS; NANOROD ARRAYS; HETEROJUNCTION; MOS2/NI3S2;

D O I：

10.1016/j.colsurfa.2022.130550

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Due to the advantages of large specific surface area, high mass transfer efficiency and easy access to active sites, two dimensional (2D) nanomaterials provide a great opportunity for the construction of new versatile electro-catalysts with superior properties. Herein, a graphene-templated growth of MoS2-Ni3S2 heterostructure with porous structure is successfully prepared on the Ni foam (MoS2/Ni3S2@G/NF) by one pot hydrothermal method. The electronic structure and surface properties of 2D chalcogenides are modified by heterogeneous interface and component engineering, so as to prepare a high-performance transition metal composite catalytic electrode for electrochemical reaction. The optimized MoS2/Ni3S2 @G/NF shows excellent bifunctional activity and durability in alkaline medium. It only needs 53 mV and 265 mV overpotential to reach 10 mA cm-2 current density of HER and 20 mA cm-2 current density for OER, respectively. When the composite is used as an advanced electro-catalyst for water splitting, the 1.47 V voltage required to achieve a current density of 10 mA cm-2, which is better than the most non-noble metal electrocatalysts. The heterostructures between MoS2, Ni3S2 and graphene are conducive to the synchronous chemical adsorption of hydrogen and oxygen-containing intermediates, which can improve the catalytic activity of overall water splitting.

引用

页数：9