Polyacrylonitrile/Graphene-Based Coaxial Fiber-Shaped Supercapacitors

• 作者: RUAN Yingpeng DU Zhe SUN Xiaoxia ZHANG Kun YAO Ye WANG Xinhou
• 来源期刊: 东华大学学报（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: Flexible Electronics
• 页码范围: 1-7
• 页数: 7页
• 分类号: TS101.8
• 语种: 英文
• DOI: 10.19884/j.1672-5220.202010079

摘要

Supercapacitors have huge potential applications in the field of wearable electronic devices,such as flexible displays,flexible biosensors and implantable multimedia devices,due to their high-power density,fast charge-discharge rates,long cycling life,and relatively simple configuration.In this paper,we demonstrated hierarchically porous and continuous reduced graphene oxide-polyacrylonitrile@polyacrylonitrile(rGO-PAN@PAN)coaxial fibers with certain strength,excellent electrochemical performance through coaxial wet spinning and thermal reduction.Coaxial fibers are carbonized at high temperature and have a graded porous structure with a conductivity of 1 703 S/m.The areal specific capacitance of the supercapacitor assembled by polyvinyl alcohol/sulfuric acid(PVA/H2SO4)gel electrolyte is 11.56 mF/cm2,and its energy density reaches 0.21 mW·h/cm3,showing good electrochemical performance.Graphene-based coaxial fibers prepared by wet spinning have a great prospect of application in electronic devices due to their excellent properties.