材料科学
超级电容器
电极
阳极
氧化物
电化学
电容
热解
金属
复合材料
纳米技术
化学工程
碳纤维
冶金
复合数
工程类
物理化学
化学
作者
Xuan Zhang,Jiangshui Luo,Pengyi Tang,Xiaoliang Ye,Xiaoyuan Peng,Haolin Tang,Shi‐Gang Sun,Jan Fransaer
出处
期刊:Nano Energy
[Elsevier]
日期:2017-01-01
卷期号:31: 311-321
被引量:167
标识
DOI:10.1016/j.nanoen.2016.11.024
摘要
Despite the significant advances in preparing carbon-metal oxide composite electrodes, strategies for seamless interconnecting of these two materials without using binders are still scarce. Herein we design a novel method for in situ synthesis of porous 2D-layered carbon–metal oxide composite electrode. Firstly, 2D-layered Ni-Co mixed metal-organic frameworks (MOFs) are deposited directly on nickel foam by anodic electrodeposition. Subsequent pyrolysis and activation procedure lead to the formation of carbon–metal oxides composite electrodes. Even with an ultrahigh mass loading of 13.4 mg cm−2, the as-prepared electrodes exhibit a superior rate performance of 93% (from 1 to 20 mA cm−2), high capacitance (2098 mF cm−2 at a current density of 1 mA cm−2), low resistance and excellent cycling stability, making them promising candidates for practical supercapacitor application. As a proof of concept, several MOF derived electrodes with different metal sources have also been prepared successfully via the same route, demonstrating the versatility of the proposed method for the preparation of binder-free carbon–metal oxide composite electrodes for electrochemical devices.
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