Co(OH)2 nanosheet-decorated graphene-CNT composite for supercapacitors of high energy density

被引：46
作者：
Cheng, Qian [1 ,2 ]
Tang, Jie [1 ,2 ]
Shinya, Norio [1 ]
Qin, Lu-Chang [3 ]
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[2] Univ Tsukuba, Doctoral Program Mat Sci & Engn, Tsukuba, Ibaraki 3058577, Japan
[3] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA
来源：
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS | 2014年 / 15卷 / 01期
关键词：
supercapacitor; graphene; carbon nanotube; cobalt hydroxide; ELECTROCHEMICAL STORAGE; CARBON NANOTUBES; ELECTRODES; CAPACITANCE; SURFACE; MNO2;
D O I：
10.1088/1468-6996/15/1/014206
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A composite of graphene and carbon nanotubes has been synthesized and characterized for application as supercapacitor electrodes. By coating the nanostructured active material of Co(OH)(2) onto one electrode, the asymmetric supercapacitor has exhibited a high specific capacitance of 310 F g(-1), energy density of 172Wh kg(-1) and maximum power density of 198 kW kg(-1) in ionic liquid electrolyte EMI-TFSI.
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页数：6
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