超级电容器
材料科学
聚吡咯
分离器(采油)
石墨烯
电容
电极
纤维素
化学工程
电化学
膜
界面聚合
聚合
复合材料
纳米技术
化学
聚合物
物理化学
单体
工程类
物理
热力学
生物化学
作者
Daman Xu,Yingqi Heng,Xiang Qin,Daodao Hu
标识
DOI:10.1016/j.est.2022.104640
摘要
In this study, using natural and renewable cellulose as substrates, the key materials for cellulose-based supercapacitors (polydopamine-modified separator: LIBR-PDA, composite membrane electrode: LIBR-PDA-GR/PPy-20) were successfully fabricated by using dopamine polymerization, phase inversion, graphene (GR)/polypyrrole (PPy) doping in LIBR/water system. The LIBR-PDA separator has a well-developed pore structure, providing channels for ion transport, and exhibits superior performance compared with commercial PP and TFC, such as lower internal resistance and higher ionic conductivity of the assembled supercapacitor. The LIBR-PDA-GR/PPy-20 electrode exhibits excellent electrochemical performance with an equivalent resistance of 1.3 Ω, specific capacitance of 336.1 F/g at 0.2 A/g. The membrane-based symmetric supercapacitor assembled from LIBR-PDA-GR/PPy-20 electrode and LIBR-PDA separator exhibits excellent electrochemical energy storage performance with a specific capacitance of 415.0 F/g at 0.2 A/g, energy density of 28.1 Wh/kg, corresponding to power density of 1.25 kW/kg at 1 A/g. It provides some insights for the development of cellulose membrane-based energy storage materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI