文献类型：期刊文献

英文题名：Surface engineering of reclaimed carbon fiber (RCF) electrode for superimposed supercapacitor performance

作者：Zhao, Chongjun[1];Guo, Jingjia[1];Fan, Jingtao[1];Zhang, Xu[1];Zhao, Chunhua[1];Chen, Shi[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2022

卷号：46

外文期刊名：JOURNAL OF ENERGY STORAGE

收录：;EI(收录号：20215211384277);WOS:【SCI-EXPANDED(收录号:WOS:000780238300004)】；

语种：英文

外文关键词：Reclaimed carbon fiber (RCF); Electrode; Surface engineering;

Cu2O/CuO

摘要：Micrometer-sized carbon fiber (CF) has the advantage in directly serving as flexible electrode or support, while it simultaneously has the disadvantage of the unsatisfactory specific capacitance because of the small specific surface area and low activation. In this work, aerobically reclaimed carbon fiber (RCF) obtained from carbon fiber reinforced polymer (CFRP) is chosen as the subjected electrode, which is surface engineered through a thermal etch process of Cu2O/CuO anchored during a previous hydrothermal process and a subsequent chemical oxidation progress. Due to the circular holes as well as oxygen-containing functional groups on the functionalized CF surface, a superimposed electrochemical performance of functional holey reclaimed carbon fiber (FHRCF) electrode exhibits a specific capacitance of 122.2 F/g at 1 A/g (vs. 0.27 F/g for virgin CF, 31.3 F/g for RCF), and the capacitance retention of 100% after 30,000 cycles. Referring to its symmetrical supercapacitor (SSC), an energy density of 3.84 Wh/kg at the power density of 93.8 W/kg are acquired. This work not only pushes the reclamation of carbon fiber but also supplies mu m-scale carbon fiber-based supercapacitor electrode with superimposed electrochemical performance.