Strongly coupled manganese ferrite/carbon black/polyaniline hybrid for low-cost supercapacitors with high rate capability

被引:112
|
作者
Zha, Daosong [1 ]
Xiong, Pan [1 ]
Wang, Xin [1 ]
机构
[1] Nanjing Univ Sci & Technol, Minist Educ, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China
关键词
Carbon black; Rate capability; Supercapacitor; Ternary hybrid nanostructure; Low-cost; HIGH-PERFORMANCE SUPERCAPACITORS; SOLID-STATE SUPERCAPACITORS; REDUCED GRAPHENE OXIDE; ENERGY-STORAGE DEVICES; CARBON NANOTUBES; ELECTROCHEMICAL CAPACITORS; ASYMMETRIC SUPERCAPACITOR; ELECTRODE MATERIAL; HOLLOW SPHERES; POROUS CARBON;
D O I
10.1016/j.electacta.2015.10.139
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Hybrid nanostructures with reliable electrochemical performances (e.g., high rate capability and long cycling lifetime) and low fabrication costs are attractive for extensive application for next-generation energy storage devices. Herein, based on the inexpensive commercial carbon black (CB), a ternary manganese ferrite/carbon black/polyaniline (MCBP) hybrid is designed and synthesized through a facile two-step approach. It is found that the synergistic effects in this strongly coupled ternary hybrid nanostructure can remarkably enhance the electrochemical performances, including the impressively high rate capability (similar to 98% capacitance retention at a current density of as high as 40 A g(-1)) and excellent cycling stability (similar to 80% capacitance retention after 10,000 cycles at 5 A g(-1)). A symmetric supercapacitor is fabricated using ternary MCBP hybrid, which presents excellent rate capability (over 94% capacitance retention at 10 A g(-1)) and long cycle life (similar to 75% capacitance retention after 100,000 cycles at 5 A g(-1)). Such a low-cost integrated ternary hybrid is a promising electrode material for commercial applications in supercapacitors. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:218 / 228
页数:11
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