聚吡咯
超级电容器
石墨烯
材料科学
电极
电化学
纳米技术
氧化物
化学工程
导电聚合物
碳纤维
氧化石墨烯纸
石墨烯泡沫
制作
电容
聚合物
复合材料
复合数
化学
聚合
医学
替代医学
物理化学
病理
工程类
冶金
作者
Yu Zhang,Aizhen Xu,Yu Yan,Shuyan Ye,Zhiyi Zhao,Weifeng Cao,Shaoqing Zhang,Yujun Qin
出处
期刊:Langmuir
[American Chemical Society]
日期:2024-01-02
被引量:2
标识
DOI:10.1021/acs.langmuir.3c03067
摘要
The facile and cost-effective preparation of supercapacitor electrodes is significant for the application of this kind of electrochemical energy-storing module. In this work, we designed a feasible strategy to fabricate a binary active material onto a current collector in one step. A colloidal mixture of graphene oxide and pyrrole layered on a carbon cloth could undergo a redox reaction through a mild hydrothermal process to yield a reduced graphene oxide/polypyrrole hydrogel film anchored onto the carbon cloth. The integrated electrode with the porous graphene/polypyrrole active material could be directly utilized as a freestanding working electrode for electrochemical measurements and the assembly of supercapacitor devices. The as-prepared electrode could achieve a high capacitance of 1221 mF cm–2 at 1 mA cm–2 (531 F g–1) with satisfactory cycling stability. The constructed symmetric supercapacitor with two optimal electrodes could provide an energy density of 70.4 μWh cm–2 (15.3 Wh kg–1). This work offers a feasible pathway toward the integration of graphene/conducting polymer composites as electrochemical electrodes.
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