Electrochemical performance and transformation of Co-MOF/reduced graphene oxide composite

被引：44
|
作者：
Wang, Zifeng [1 ]
Gao, Chengwei [1 ]
Liu, Yushan [1 ]
Li, Dan [1 ]
Chen, Weihua [1 ]
Ma, Yuhang [1 ]
Wang, Canpei [1 ]
Zhang, Jianmin [1 ]
机构：
[1] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Peoples R China
来源：
MATERIALS LETTERS | 2017年 / 193卷
基金：
中国国家自然科学基金;
关键词：
Metal-organic frameworks; Composite materials; Electrochemical capacitors; Energy storage and conversion; METAL-ORGANIC FRAMEWORK; ENERGY-STORAGE; SUPERCAPACITORS;
D O I：
10.1016/j.matlet.2017.01.121
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A Co-MOF/reduced graphene oxide (Co-MOF/rGO) composite was prepared, and showed enhanced electrochemical performance compared with bare Co-MOF. Notably, the areas of CV curves witness the increase with the augment of cycle numbers and the redox peaks experience shifts, providing obvious transformation evidence. After a long term transformation process, the composite achieves a pretty high specific capacitance of 1521.6 F g(-1) at 0.2 A g(-1) and 1117.6 F g(-1) even at the high current density of 12 A g(-1). This phenomenon could be attributed to the transformation of Co-MOF into CoOOH under the synergy effects of weak alkaline solution and electric field. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：216 / 219
页数：4
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