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

页码：15423 / 15428

页数：6

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