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

页码：216 / 219

页数：4

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