Enhanced interface interaction in Cu2S@Ni core-shell nanorod arrays as hydrogen evolution reaction electrode for alkaline seawater electrolysis

被引：46

作者：

Zhang, Baoshan ^{[1
]}

Xu, Wenwen ^{[2
,3
]}

Liu, Shuo ^{[1
]}

Chen, Xu ^{[2
,3
]}

Ma, Tengfei ^{[2
,3
]}

Wang, Guohua ^{[2
]}

Lu, Zhiyi ^{[2
,3
]}

Sun, Jie ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 457, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2021年 / 506卷

基金：

中国国家自然科学基金;

关键词：

Hydrogen evolution reaction; Seawater electrolysis; Interface interaction; Core-shell; NICKEL; WATER; EFFICIENT; NIO; ELECTROCATALYSTS; REDUCTION; CATALYST; DESIGN; FUEL;

D O I：

10.1016/j.jpowsour.2021.230235

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：

Exploring cheap, efficient and stable electro-catalysts for hydrogen evolution reaction (HER) is a vital technology for seawater splitting development. Herein, we demonstrate that constructing underlying Cu2S nanorod arrays is crucial for improving the HER activity of surface Ni catalyst. Electrochemical results reveal that nickel coated Cu2S nanoarrays (Cu2S@Ni) on copper foam exhibits a preferable HER activity (similar to 500 mA cm(-2) at <200 mV overpotential), outperforming Cu2O@Ni and pure Ni counterparts. Detailed analyses indicate that the enhanced HER activity of Cu2S@Ni can be attributed to Ni-S interaction between surface nickel and underlying Cu2S nanorods, which optimizes the adsorption energy of hydrogen on the surface. Moreover, the Cu2S@Ni nanoarray electrode shows a remarkable HER stability, highlighting its promising potential in alkaline seawater electrolysis.

引用

页数：7

共 48 条

[1] Electrodeposited Ni dendrites with high activity and durability for hydrogen evolution reaction in alkaline water electrolysis [J].