High-performance binder-free supercapacitor electrode by direct growth of cobalt-manganese composite oxide nansostructures on nickel foam

被引：49
|
作者：
Jiang, Shulan [1 ]
Shi, Tielin [1 ]
Long, Hu [1 ]
Sun, Yongming [2 ]
Zhou, Wei [2 ]
Tang, Zirong [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Peoples R China
[2] Wuhan Jiawei Photovolta Lighting Co LTD, Wuhan, Peoples R China
来源：
NANOSCALE RESEARCH LETTERS | 2014年 / 9卷
基金：
美国国家科学基金会;
关键词：
Cobalt-manganese composite oxide; Hierarchical nanosheets; Binder-free; Supercapacitor electrode; FACILE SYNTHESIS; NANOSHEET ARRAYS; NANOWIRE ARRAYS; HIGH-CAPACITY; NI FOAM; MICROSPHERES; MNCO2O4; ANODES; CORE; LIFE;
D O I：
10.1186/1556-276X-9-492
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A facile approach composed of hydrothermal process and annealing treatment is proposed to directly grow cobalt-manganese composite oxide ((Co,Mn)(3)O-4) nanostructures on three-dimensional (3D) conductive nickel (Ni) foam for a supercapacitor electrode. The as-fabricated porous electrode exhibits excellent rate capability and high specific capacitance of 840.2 F g(-1) at the current density of 10 A g(-1), and the electrode also shows excellent cycling performance, which retains 102% of its initial discharge capacitance after 7,000 cycles. The fabricated binder-free hierarchical composite electrode with superior electrochemical performance is a promising candidate for high-performance supercapacitors.
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页数：8
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