A new synthetic route to hollow Co3O4 octahedra for supercapacitor applications

被引：96

作者：

Cao, Yuebin ^{[1
]}

Yuan, Fangli ^{[2
]}

Yao, Mingshui ^{[2
]}

Bang, Jin Ho ^{[3
,4
]}

Lee, Jung-Ho ^{[1
]}

机构：

[1] Hanyang Univ, Dept Chem Engn, Ansan 426791, South Korea

[2] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China

[3] Hanyang Univ, Dept Chem & Appl Chem, Ansan 426791, South Korea

[4] Hanyang Univ, Dept Bionano Engn, Ansan 426791, South Korea

来源：

CRYSTENGCOMM | 2014年 / 16卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

HIGH-PERFORMANCE SUPERCAPACITOR; CARBON-FIBER PAPER; NANOWIRE ARRAYS; NI FOAM; GROWTH; FABRICATION; MESOCRYSTALS; NANOPARTICLES; CAPACITANCE; NI(OH)(2);

D O I：

10.1039/c3ce41840e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Co3O4 hollow octahedra were successfully synthesized via a facile one-step solvothermal route. Time-resolved electron microscopy and X-ray diffraction analyses revealed that the Co3O4 hollow octahedra were formed through the self-assembly of primary nanocrystals followed by subsequent Ostwald ripening. Subtle control over the reaction conditions led to different morphologies (hexagonal plates and nanocubes) and crystal structures (beta-Co(OH)(2)-Co3O4 composite). The unique hollow nanostructure rendered our Co3O4 potentially useful for charge-storage applications. To prove its usefulness, the pseudocapacitive performance of the Co3O4 hollow octahedra as a supercapacitor electrode was evaluated and exhibited a charge storage capacity of 192 F g(-1) with good long-term cyclability.

引用

页码：826 / 833

页数：8

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