共 60 条
3D hierarchical CuS microflowers constructed on copper powders-filled nickel foam as advanced binder-free electrodes
被引:25
作者:

Ying, Zongrong
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Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China

Zhao, Shuangsheng
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Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China

Yue, Jinru
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Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China

Ju, Tao
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Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China

Zhang, Yongzheng
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Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China

Xie, Jie
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Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China

Wang, Qi
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Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China
机构:
[1] Nanjing Univ Sci & Technol, Sch Chem Engn, Dept Mat Sci & Engn, Nanjing 210094, Peoples R China
关键词:
Nickel foam;
Copper powder;
Filling;
CuS;
Microflower;
Supercapacitor;
STABLE BIFUNCTIONAL ELECTROCATALYSTS;
NI-FOAM;
SULFIDE NANOSHEETS;
OXYGEN EVOLUTION;
HIGHLY EFFICIENT;
NANOWIRE ARRAYS;
LOW-TEMPERATURE;
ENERGY DENSITY;
TEMPLATE-FREE;
PERFORMANCE;
D O I:
10.1016/j.jallcom.2019.153437
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:
A novel strategy, consisting of sonication-assisted filling step followed by a chemical-bath surface sulfidization process, was designed to fabricate 3D hierarchical CuS microflowers constructed on copper powders-filled nickel foam (Cu@CuS-NF) as advanced binder-free electrodes for high-performance supercapacitors. Scanning electron microscope, powder X-ray diffraction and X-ray photoelectron spectroscopy techniques were employed to confirm the microstructure and composition. Electrochemical measurements demonstrated that the Cu@CuS-NF electrode has highly improved capacitance with an ultra-high area capacitance of 11.4 F cm(-2) at a high current density of 90 mA cm(-2). Also, the Cu@CuS-NF electrode has superior cycling stability with more than 100% retention of the initial area capacitance after 3000 cycles at 180 mA cm(-2). The excellent electrochemical performance can be mostly attributed to a combination of the ultra-large loading area and very good electroconductive network formed from copper powders filling inside nickel foam. Our work opens a new door to engineering ultra-high-performance nickel-foam-based electrodes for electrochemical devices including water splitting and energy storage/conversion. (C) 2019 Elsevier B.V. All rights reserved.
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