Asymmetric supercapacitors with high energy density based on helical hierarchical porous NaxMnO2 and MoO2

被引：93

作者：

Lu, Xue-Feng ^{[1
]}

Huang, Zhi-Xiang ^{[1
]}

Tong, Ye-Xiang ^{[1
]}

Li, Gao-Ren ^{[1
]}

机构：

[1] Sun Yat Sen Univ, KLGHEI Environm & Energy Chem, Sch Chem & Chem Engn, MOE Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China

来源：

CHEMICAL SCIENCE | 2016年 / 7卷 / 01期

基金：

中国国家自然科学基金;

关键词：

HIGH-PERFORMANCE; MANGANESE OXIDE; HIGH-CAPACITANCE; FACILE SYNTHESIS; ANODE MATERIALS; NANOSHEETS; NANOWIRES; ARRAYS; ELECTRODES; COMPOSITES;

D O I：

10.1039/c5sc03326h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Helical hierarchical porous NaxMnO2/CC and MoO2/CC, which are assembled from nanosheets and nanoparticles, respectively, are fabricated using a simple electrodeposition method. These unique helical porous structures enable electrodes to have a high capacitance and an outstanding cycling performance. Based on the helical NaxMnO2/CC as the positive electrodes and helical MoO2/CC as the negative electrodes, high performance NaxMnO2/CC//MoO2/CC asymmetric supercapacitors (ASCs) are successfully assembled, and they achieve a maximum volume C-sp of 2.04 F cm(-3) and a maximum energy density of 0.92 mW h cm(-3) for the whole device and an excellent cycling stability with 97.22% Csp retention after 6000 cycles.

引用

页码：510 / 517

页数：8

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