Co(OH)2/graphene sheet-on-sheet hybrid as high-performance electrochemical pseudocapacitor electrodes

被引：23
作者：
Sun, Cheng-Yue [1 ,2 ]
Zhu, Yun-Guang [1 ,2 ]
Zhu, Tie-Jun [1 ,2 ]
Xie, Jian [1 ,2 ]
Cao, Gao-Shao [1 ,2 ]
Zhao, Xin-Bing [1 ,2 ]
机构：
[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Dept Mat Sci & Engn, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou 310027, Zhejiang, Peoples R China
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2013年 / 17卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Graphene; Nanostructures; Supercapacitors; Cobalt hydroxide; COBALT HYDROXIDE; HIGH-POWER; OXIDE; SUPERCAPACITOR; COMPOSITES; FILM;
D O I：
10.1007/s10008-012-1979-x
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A Co(OH)(2)/graphene sheet-on-sheet hybrid has been fabricated by in situ one-step hydrothermal growth for electrochemical pseudocapacitors application. The hybrid delivers a specific capacitance of 436 F g(-1) at a current density of 50 A g(-1). Besides, it can keep a specific capacitance of 651 F g(-1) after 10,000 cycles at 10 A g(-1). The excellent performance can be ascribed to the high-quality graphene matrix, regular morphology and high crystallinity of Co(OH)(2), and unique sheet-on-sheet structure of the hybrid, endowing enhanced transportation of electrons and Faradic redox reactions. The results demonstrate that the Co(OH)(2)/graphene hybrid with a sheet-on-sheet structure is promising for high-performance energy storage applications.
引用
收藏
页码：1159 / 1165
页数：7
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