Activated carbon prepared from waste tire pyrolysis carbon black via CO_(2)/KOH activation used as supercapacitor electrode

作     者：HOU ShengPing ZHANG Da XIE ZhiPeng KANG Yao TANG ZhengGang DAI YongNian LEI Yong CHEN Jian LIANG Feng 

作者机构：Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China Fachgebiet Angewandte NanophysikInstitut für Physik&ZMN MacroNano(ZIK)Technische Universität IlmenauIlmenau 98693Germany Department of Materials Science and EngineeringSichuan University of Science and EngineeringZigong 643000China State Key Laboratory of Complex Nonferrous Metal Resources Clean UtilizationKunming University of Science and TechnologyKunming 650093China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2022年第65卷第10期

页      面：2337-2347页

核心收录：

学科分类：081702[工学-化学工艺] 080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 12175089) the National Key Research and Development Program of China (Grant No. 2019YFC1907900) the Key Research and Development Program of Yunnan Province (Grant No. 202103AF140006) the Applied Basic Research Programs of Yunnan Provincial Science and Technology Department (Grant No. 202001AW070004) the Freely Exploring Fund for Academicians in Yunnan Province (Grant No.202005AA160008) the Key Laboratory of Resource Chemistry,Ministry of Education (Grant No. KLRC_ME2001) the Applied Basic Research Programs of Sichuan Provincial Science and Technology Department(Grant No. 2021yj0007) 

主　　题：waste tires pyrolysis carbon black CO_(2)/KOH activation activated carbon electrical double-layer capacitor 

摘      要：As the quantity of waste tires increases,more pyrolysis carbon black(CBp),a type of low value-added carbon black,is being ***,the application of CBp has been ***,it is necessary to identify and expand applications of *** work focuses on the preparation of activated carbon(AC)from CBp using the physicochemical activation of carbon dioxide(CO_(2))and potassium hydroxide(KOH).Thereafter,AC is applied to the electrode of the electrical double-layer capacitor(EDLC).The AC prepared by CO_(2)/KOH activation exhibited a hierarchical pore *** specific surface area increased from 415 to 733 m^(2)g^(−1),and in combination with low ash content of 1.51%,ensured abundant ion diffusion channels and active sites to store *** EDLC comprising the AC(AC-2)electrode prepared by excitation of CO_(2)(300 sccm)and KOH had a reasonable gravimetric specific capacitance of 192 F g^(−1)at 0.5 A g^(−1),and exhibited a good rate capability of 73%at 50 A g^(−1)in a three-electrode ***,the EDLC device comprising the AC-2 electrode delivered excellent cycling stability(capacitance retention of 106%after 10000 cycles at 2 A g^(−1)in a two-electrode system).Furthermore,a symmetric supercapacitor based on an AC electrode that exhibits a supreme energy density of 4.7 Wh kg^(−1)and a maximum power density of 6362.6 W kg^(−1)is demonstrated.