Mo-Doped Sulfur-Vacancy-Rich V1.11S2 Nanosheets for Efficient Hydrogen Evolution

被引：2
|
作者：
Chen, Qiuyue [1 ]
An, Xuguang [1 ]
Wu, Xiaoqiang [1 ]
Zhang, Jing [1 ]
Yao, Weitang [1 ]
Sun, Chenghua [4 ,5 ]
Wang, Qingyuan [1 ,2 ]
Kong, Qingquan [1 ,2 ,3 ]
机构：
[1] Chengdu Univ, Dept Mech Engn, Chengdu 610106, Sichuan, Peoples R China
[2] Sichuan Univ, Coll Architecture & Environm, Chengdu 610065, Sichuan, Peoples R China
[3] Sichuan Univ, Key Lab Sichuan Prov, Catastroph Mech & Engn Disaster Prevent, Chengdu 610065, Sichuan, Peoples R China
[4] Swinburne Univ Technol, Dept Chem & Biotechnol, Hawthorn, Vic 3122, Australia
[5] Swinburne Univ Technol, Ctr Translat Atomat, Hawthorn, Vic 3122, Australia
来源：
CHEMISTRYSELECT | 2022年 / 7卷 / 23期
基金：
中国国家自然科学基金;
关键词：
Hydrogen evolution reaction; Sulfur vacancies; Vanadium disulfide; Doping; ELECTROCHEMICAL H-2 EVOLUTION; ACTIVE EDGE SITES; HIGHLY EFFICIENT; VS2; ELECTROCATALYSTS; SINGLE; NANOPARTICLES; MICROSPHERE; SURFACE; ARRAYS;
D O I：
10.1002/slct.202201266
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
High-performance low-cost hydrogen evolution electrocatalysts are urgently demanded for hydrogen production by water splitting. Herein, we report that an efficient defect engineering strategy, NaBH4 treatment, was employed to promote the HER activity of pre-synthesized Mo-doped V1.11S2 nanosheets. The abundant sulfur vacancies enable Mo-doped V1.11S2 petaloid nanosheets with a low overpotential of 160 mV and a small Tafel slope of 46.2 mV dec(-1) at 10 mA cm(-2) to drive the HER, as well as excellent long-term stability in 0.5 mol L-1 H2SO4. The outstanding electrocatalytic performance can be attributed to the large electrochemical surface area and low charge transfer resistance.
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页数：6
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