文献类型：期刊文献

英文题名：Stable RuO2-based ternary composite electrode of sandwiched framework for electrochemical capacitors

作者：Li, X. Zheng, F. Zhou, D. F. Luo, Y. M. Li, Y. F. Lu, F. H.

第一作者：李翔

通信作者：Li, X[1]|[14440f8550d388a1a795f]李祥;

机构：[1]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院材料与冶金工程学院;贵州理工学院;

年份：2018

卷号：289

起止页码：292-310

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20184205945834);Scopus(收录号：2-s2.0-85054676434);WOS:【SCI-EXPANDED(收录号:WOS:000446234700031)】；

基金：Financial supports for this work were provided by Qiankehe LH (2015) 7092 and Qiankehe LH (2016) 7100 as well as XJGC20160503.

语种：英文

外文关键词：TiO2-doped RuO2; Magnetron sputtering; Wet milling; Thin SnO2 film; Specific capacitance

摘要：TiO2-doped RuO2 nanoparticles, obtained through wet milling and sol-gel process, are coated on thin SnO2 film covered tantalum substrate by magnetron sputtering to make a composite electrode of sandwiched framework. Phase structure, morphology, specific surface area, pore distribution as well as electrochemical performance of this composite electrode are tested and analyzed. Our results indicate that sample annealed at 260 degrees C for 4 h has optimal microstructure and electrochemical performance at doping level of 15 wt.% TiO2 with particles size of 38-43 nm and specific surface area of 22.330 m(2) g(-1). Specific capacitance of 692 Fg(-1) (the highest in this study), good charge-discharge behavior, low equivalent series resistance as well as long cycling life are observed. Integrating into a 50 V 8000 mF electrochemical capacitor, specific energy and specific power reach 31.6 in Wh. Kg(-1) and specific power of 2032 W Kg(-1), respectively. Meanwhile, composite electrode shows stable capacitance without hydrogen evolution and peeling between TiO2-doped RuO2 nanoparticles and thin SnO2 film modified tantalum substrate. (c) 2018 Elsevier Ltd. All rights reserved.