文献类型：期刊文献

英文题名：Expired Cfrp-Derived C@Cf Coaxial Electrode And its High Supercapacitor Performance

作者：Zhao, Chunhua[1]; Gao, Wenjie[1]; Zhao, Yipeng[1]; Li, Mingkun[1]; Tong, Xiangzhi[1]; Guo, Huiming[1]; Zhao, Chongjun[1]; Zhu, Yunpeng[1]

机构：[1] Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240109895)

语种：英文

外文关键词：Capacitance - Carbon fiber reinforced plastics - Electrochemical electrodes - Epoxy resins - Fibers - Supercapacitor

摘要：Inspired by the double demands of both the collection/storage from new energy devices and the storage/supply for consumption tools, energy storage attracts much attention. In this work, a flexible C@CF (Carbon layer@Carbon fiber) coaxial electrode owning a specific surface area of 786 m2 g-1 (vs. 19.9 m2 g-1 for bared CF) is directly constructed by coating an active carbon layer on the surface of micrometer-sized CF (7-8 μm). Especially, expired CFRP (Carbon fiber reinforced polymer) is chosen as the source of both carbon and carbon fiber, in which the remained the epoxy resin around CF is in-situ converted into not gas but active carbon and loaded on the surface of carbon fiber, after epoxy resin in CFRP is partially degraded and removed. As-prepared C@CF electrode exhibits good electrochemical performance in supercapacitor: A specific capacitance of 202 F g-1 at 1 A g-1 for its electrode (vs. 11.1 F g-1 for bared CF), while an energy density of 9.75 Wh kg-1, and the specific capacitance retention of 93.27% after 10,000 cycles for its SSC (symmetric supercapacitor). ? 2024, The Authors. All rights reserved.