文献类型：期刊文献

英文题名：Preparation and electrochemical performance of TiO2-SnO2 doped RuO2 composite electrode for supercapacitors

作者：Li, Xiang Zheng, Feng Luo, Yuan Wu, Yujiao Lu, Fanghai

第一作者：李祥

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

机构：[1]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, 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, 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：2017

卷号：237

起止页码：177-184

外文期刊名：ELECTROCHIMICA ACTA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000401112200022)】；

基金：Financial supports for this work were provided by Qianjiaohe KY (2013) 167, Qiankehe J (2014) 2077 and Qiankehe LH (2015) 7092.

语种：英文

外文关键词：SnO2; RuO2; doping; wet balling mill; specific capacitance

摘要：TiO2-SnO2 doped RuO2 composite electrodes were prepared by wet balling mill plus precipitation processes. Composite materials were pre-annealed at different temperatures prior to test electrochemical performances, where 270 degrees C showed the most outstanding phase and morphology, which characterized by XRD and SEM, respectively. Morphology of composite showed small dispersed porous nanoparticles (average 43 nm). Meanwhile, TiO2-SnO2 doped RuO2 composite electrodes with different content were studied by using cyclic voltammetry, galvanostatic charge-discharge, electrochemical impedance spectrum as well as open circuit potential. Specific capacitance value of 571 F g(-1) was registered for 35 wt.% TiO2-SnO2 doped composite electrode with good charge-discharge behavior. Impedance spectra curve displayed complete semicircles in high frequency region and nearly vertical lines in low frequency range. Open circuit potential of composite electrodes was remained stable at testing conditions. TiO2-SnO2 doped RuO2 electrodes can reduce loading of RuO2, which decrease cost. (C) 2017 Elsevier Ltd. All rights reserved.