Synthesis and characterization of graphene hollow spheres for application in supercapacitors

被引：84
|
作者：
Shao, Qingguo [1 ,2 ]
Tang, Jie [1 ,2 ]
Lin, Yuexian [1 ,2 ]
Zhang, Feifei [1 ,2 ]
Yuan, Jinshi [1 ]
Zhang, Han [1 ]
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：
JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 48期
关键词：
CHEMICAL-VAPOR-DEPOSITION; OXIDE; PERFORMANCE; COMPOSITES; NANOSHEETS; SHEETS; FILMS; ELECTRODES; CAPSULES;
D O I：
10.1039/c3ta12789c
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：
We have successfully assembled graphene nanosheets into spherical shells using polystyrene spheres as templates. Compared with stacked planar graphene, the as-prepared graphene spherical shells have more free space in between the spheres, which results in a larger accessible surface area for adsorption of electrolyte ions in supercapacitors. Electrochemical tests show that the graphene hollow spheres exhibit a high specific capacitance of 273 F g(-1) and excellent electrochemical stability.
引用
收藏
页码：15423 / 15428
页数：6
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