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- Title
Polyacrylonitrile/Graphene-Based Coaxial Fiber-Shaped Supercapacitors.
- Authors
RUAN Yingpeng; DU Zhe; SUN Xiaoxia; ZHANG Kun; YAO Ye; WANG Xinhou
- Abstract
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 chargedischarge rates, long cycling life, and relatively simple configuration. In this paper, we demonstrated hierarchically porous and continuous reduced graphene oxidepolyacrylonitrile @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.
- Subjects
POLYACRYLONITRILES; GRAPHENE; SUPERCAPACITORS; BIOSENSORS; WEARABLE technology
- Publication
Journal of Donghua University (English Edition), 2021, Vol 38, Issue 2, p1
- ISSN
1672-5220
- Publication type
Article
- DOI
10.19884/j.1672-5220.202010079