文献类型：期刊文章

作　　者：何则强[1] 李新海[2] 熊利芝[3] 麻明友[3] 吴显明[3] 肖卓炳[3] 刘文萍[4]

机构地区：[1]College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China,School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China [2]School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China [3]College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China [4]College

出　　处：《Journal of Central South University of Technology》

基　　金：Project(04B016)supportedbytheOfficeofEducationHunanProvince;projiect(2004107)supportedbythePostdoctoralScienceFoundationofCentralSouthUniversity

年　　份：2005

卷　　号：12

期　　号：4

起止页码：437-442

语　　种：中文

收录情况：EBSCO、EI、IC、SCI(收录号：WOS:000231793900018)、SCI-EXPANDED(收录号：WOS:000231793900018)、SCOPUS、WOS、普通刊

摘　　要：A novel process for preparing tin oxide thin films directly on copper foil by electrodeposition was developed. An optimal preparation technology to obtain SnOz thin films was proposed with current density of 8 mA/cm^2, the time of deposition of 120 min, the concentration of tin dichloride of 0.02 mol/L and the concentration of dissociated acid of 0. 03 mol/L. The phase identification, microstructure and morphology of the thin films were investigated by thermogravimetric analysis and differential thermal analysis, X-ray diffraction, Fourier transform infrared spectra,scanning electron microscopy and transmission electron microscopy. The as-deposited thin film was composed of SnO2·xH2O was obtained by drying at room temperature. Nanocrystalline SnO2 thin film having tetragonal structure with average grain size in the range of 8 to 20 nm and porous, uniform surface was obtained by heat-treating the as-deposited film at 400 ℃ for 2 h. Electrochemical characterization shows that SnO2 film can deliver a discharge capacity of 798 mAh/g and the SnO2 film with smooth surface and annealed at 400 ℃ for 2 h has better cycle performance than that with rough surface and annealed at 150℃ for 10 h.

关 键 词：tin oxidet film  ELECTRODEPOSITION lithium ion battery  electrochemical properties  

分 类 号：O614.43]