文献类型：期刊文献

英文题名：Solar-assisting pyrolytically reclaimed carbon fiber and their hybrids of MnO2/RCF for supercapacitor electrodes

作者：Zhao, Chongjun[1];Ge, Zhengxiang[1];Zhou, Yanan[1];Huang, Youfu[1];Wang, Gefei[1];Qian, Xiuzhen[1]

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

年份：2017

卷号：114

起止页码：230

外文期刊名：CARBON

收录：;EI(收录号：20165103155550);WOS:【SCI-EXPANDED(收录号:WOS:000393249600027)】；

基金：We are grateful for the support of the National Natural Science Foundation of China (No. 20504026), the Shanghai Natural Science Foundation (No. 13ZR1411900), the Shanghai Leading Academic Discipline Project (B502), the Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

外文关键词：Capacitance - Electrochemical electrodes - Manganese oxide - Potassium hydroxide - Solar energy - Supercapacitor - Carbon fibers - Carbon fiber reinforced plastics - Sodium sulfate

摘要：By using solar energy as the power source, aligned and clean reclaimed carbon fibers (RCFs) were successfully recovered from carbon fiber-reinforced polymer (CFRP). Furthermore, alpha-MnO2 nanowires were grown on the RCF surface through a one-step hydrothermal process, and thus MnO2/RCF composite was successfully prepared. Both the RCF and MnO2/RCF can be directly utilized as supercapacitor electrode, and the electrochemical performance of the electrode materials were evaluated by utilizing cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS) in a three-electrode cell. RCF electrode exhibited a favorable performance with a prolonged potential window (-1.6-0 V) in a 2 mol L-1 of aqueous KOH solution, while the MnO2/RCF electrode.prepared at 150 degrees C showed a superior electrochemical performance in a 1 mol L-1 of aqueous Na2SO4 solution: a specific capacitance of 228.8 F g(-1) at 1 A g(-1) and high cycling stability (about 91.2% capacitance retention after 3000 cycles). A MnO2/RCF-based asymmetric supercapacitor was assembled, which exhibited excellent performances with a voltage window of 2.0 V, a high energy density of 22.9 Wh kg(-1) and a remarkable cycling stability (89% capacitance retained after 1000 cycles at 2.25 A g(-1)). (C) 2016 Elsevier Ltd. All rights reserved.