Growth of manganese oxide nanoflowers on vertically-aligned carbon nanotube arrays for high-rate electrochemical capacitive energy storage

被引:577
作者
Zhang, Hao [1 ]
Cao, Gaoping [1 ]
Wang, Zhiyong [2 ]
Yang, Yusheng [1 ]
Shi, Zujin [2 ]
Gu, Zhennan [2 ]
机构
[1] Res Inst Chem Def, Beijing 100083, Peoples R China
[2] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1021/nl800925j
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Manganese oxide nanoflower/carbon nanotube array (CNTA) composite electrodes with hierarchical porous structure, large surface area, and superior conductivity was controllable prepared by combining electrodeposition technique and a vertically aligned CNTA framework. This binder-free manganese oxide/CNTA electrode presents excellent rate capability (50.8% capacity retention at 77 A/g), high capacitance (199 F/g and 305 F/cm(3)), and long cycle life (3% capacity loss after 20 000 charge/discharge cycles), with strong promise for high-rate electrochemical capacitive energy storage applications.
引用
收藏
页码:2664 / 2668
页数:5
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