聚吡咯
超级电容器
电极
循环伏安法
电化学
材料科学
电容
导电聚合物
化学工程
复合数
纳米技术
金属有机骨架
聚合物
复合材料
化学
有机化学
工程类
物理化学
吸附
作者
Yaozhi Liu,Na Xu,Weichao Chen,Xinlong Wang,C. P. Sun,Zhong‐Min Su
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2018-01-01
卷期号:47 (38): 13472-13478
被引量:64
摘要
Electrochemical deposition is an environment-friendly method for functional film fabrication, benefiting from the facile tuning of structure and properties of the film. Metal-organic frameworks (MOFs) play a significant role in the field of energy sources because of their porous nature, large specific surface area and metal ion binding sites. However, the application of such materials is limited by their inherent insulator-like characteristics and poor electrical conductivity. In this study, we designed and fabricated a composite material comprising metal-organic framework/polypyrrole as the positive electrode of a supercapacitor via smear and electrodeposition methods. Electrochemical properties of the electrode materials were studied through galvanostatic charge/discharge (GCD) and cyclic voltammetry (CV) tests. The positive electrode has an excellent specific capacitance of 284.3 F g-1 (180.7 mF cm-2) with 1 mA cm-2 current density. Furthermore, this material as a positive electrode shows high cycling stability after 40 000 cycles (100.7% capacitance retention). This strategy can be extended to fabricate other MOFs and MOFs/conducting polymers composite electrodes for supercapacitors.
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