MnO2-Au Composite Electrodes for Supercapacitors

被引：11

作者：

Dai, Yuming ^{[1
,2
,3
]}

Tang, Shaochun ^{[2
,3
]}

Wang, Xiaoyu ^{[1
]}

Huang, Xiang ^{[1
]}

Zhu, Chao ^{[1
]}

Hang, Zusheng ^{[1
]}

Meng, Xiangkang ^{[2
,3
]}

机构：

[1] Nanjing Inst Technol, Sch Mat Engn, Nanjing, Jiangsu, Peoples R China

[2] Nanjing Univ, Inst Mat Engn, Natl Lab Solid State Microstruct, Nanjing, Jiangsu, Peoples R China

[3] Nanjing Univ, Coll Engn & Appl Sci, Nanjing, Jiangsu, Peoples R China

来源：

CHEMISTRY LETTERS | 2014年 / 43卷 / 01期

基金：

中国国家自然科学基金;

关键词：

MANGANESE; CAPACITOR; STORAGE;

D O I：

10.1246/cl.130819

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The MnO2 nanorod-Au nanoparticle composites that exhibit superior supercapacitance and long-term durability have been fabricated using a two-step procedure. The role of Au nanoparticles is not only to improve the electrical conductivity but also to enhance the structural stability. The composites have a specific capacitance of 406.8 F g(-1) at a scan rate of 50 mV s(-1), which is almost five times that of the pure MnO2 nanorods. The composites have 91.3% capacitance retention over 2000 charge-discharge cycles at 5 A g(-1), which is much better than the capacitance retention of pure MnO2 nanorods (74.6%).

引用

页码：122 / 124

页数：3

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