Self-assembly synthesis of graphene oxide double-shell hollow-spheres decorated with Mn3O4 for electrochemical supercapacitors

被引：44

作者：

Zhang, Cancan ^{[1
]}

Wang, Ligang ^{[1
]}

Zhao, Yizhe ^{[1
]}

Tian, Yang ^{[1
]}

Liang, Jianbo ^{[1
]}

机构：

[1] Capital Normal Univ, Dept Chem, Beijing Key Lab Opt Mat & Photon Devices, Beijing 100048, Peoples R China

来源：

CARBON | 2016年 / 107卷

基金：

美国国家科学基金会;

关键词：

HYDROTHERMAL SYNTHESIS; CARBON SPHERES; VOLUMETRIC CAPACITANCE; SOLVOTHERMAL SYNTHESIS; ELECTRODE MATERIAL; ANODE MATERIAL; PERFORMANCE; HYBRID; NANOPARTICLES; COMPOSITE;

D O I：

10.1016/j.carbon.2016.05.057

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：

Novel graphene oxide double-shell hollow-spheres decorated with Mn3O4 nanocrystals were synthesized via a facile solvothermal self-assembly method. They had the uniform outer diameter in ca. 100 nm and the thickness of each shell in ca. 5 nm. The electrochemical supercapacitive properties of the prepared double-shell hollow-sphere composites showed the capacitance of 225 F g(-1) at the scan rate of 5 mV s(-1), high electrochemical stability that retained about 99.5% capacitance after cycling 6000 times, and the energy density as high as 34.1 Wh kg(-1) at the power density of 251 W kg(-1). These performances were superior to those of most reported planar graphene-Mn3O4 nanocomposites as well as pure Mn3O4 nanocrystals. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：100 / 108

页数：9

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