共 57 条
Core-shell structured ZnCo/NC@MoS2 electrocatalysts for tunable hydrogen evolution reaction
被引:99
作者:

Feng, Jianhui
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机构:
Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China

Zhou, Hu
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机构:
Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China

Chen, Danyang
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机构:
Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China

Bian, Ting
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机构:
Jiangsu Univ Sci & Technol, Sch Energy & Power Engn, Zhenjiang 212003, Jiangsu, Peoples R China Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China

论文数: 引用数:
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机构:
机构:
[1] Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[2] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[3] Jiangsu Univ Sci & Technol, Sch Energy & Power Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[4] Jiangsu Univ Sci & Technol, Marine Equipment & Technol Inst, Zhenjiang 212003, Jiangsu, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Electrocatalyst;
Hydrogen evolution reaction;
Core-shell structure;
MoS2;
Carbon;
METAL-ORGANIC FRAMEWORK;
MOS2;
NANOSHEETS;
HIGHLY EFFICIENT;
CONFINED GROWTH;
CARBON;
GRAPHENE;
POLYHEDRA;
HETEROSTRUCTURES;
NANOSTRUCTURES;
COORDINATION;
D O I:
10.1016/j.electacta.2019.135445
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
The electrocatalysts with high activity and low cost are essential for hydrogen evolution reaction (HER). Herein, we report an approach to prepare hierarchical core-shell structures ZnxCo1-x/NC@MoS2. The Zn/Co ratio affects the particle sizes of ZnxCo1-x/NC polyhedra and the distribution of Co nanoparticles, resulting in the change of the amount of exposed active sites and further afforded tunable HER activities. Notably, the hybrids exhibit significantly superior catalytic activities to pristine MoS2. The optimal catalyst displays an extraordinary HER performance in acid media with a low overpotential of 130 mV at 10 mA cm (2) and high durability. The remarkable HER properties mainly originate from the fantastic structural characteristics such as abundant exposure of MoS2 edge-sites, uniform distribution of Co-N-x species, as well as the porousness and high conductivity of supports. This research provides a promising strategy to develop inexpensive and highly-efficient HER electrocatalysts derived from metal-organic frameworks and MoS2. (c) 2019 Elsevier Ltd. All rights reserved.
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