溶胶-凝胶V_2O_5薄膜的制备及其电化学特性研究  

Preparation and electrochemical properties of V_2O_5 thin films derived by the sol-gel process

作　　者：夏长生[1] 吴广明[1] 张志华[1] 沈军[1] 周斌[1] 倪星元[1] 

机构地区：[1]同济大学波耳固体物理研究所,上海200092

出　　处：《功能材料》2005年第1期86-89,92,共5页Journal of Functional Materials

基　　金：上海市重点学科和上海市纳米专项资助项目(0352nm043);上海市曙光人才计划资助项目(03SG19);上海市自然科学基金资助项目(02ZE14101);教育部跨世纪优秀人才计划资助;上海市科委中法合作项目资助项目(02SL001)

摘　　要：优化了以V2O5 粉末、苯甲醇和异丙醇为原料制备 V2O5 薄膜的溶胶 凝胶技术工艺,使用 XRD、FTIR、AFM、UV- VIS- NIR分光光度计和电化学分析等方法研究了薄膜的特性。实验结果表明:采用经过优化的工艺制备的V2O5 溶胶为 V4+ 离子和 V5+ 离子的混合体,具有很好的稳定性和重复性;随热处理温度的升高,薄膜结构收缩,晶粒长大,V4+ 离子逐渐被氧化为V5+离子;V2O5 薄膜具有良好的电化学伏安循环特性。The sol-gel process with V2O5 powder, benzyl alcohol and isopropanol to prepare V2O5 thin films were optimized. The films were characterized by XRD, FTIR, AFM, UV-VIS-NIR spectrophotometer and electrochemical measurements respectively. And the experimental results showed that V2O5 solutions prepared by the optimized process were the mixture of V4+ and V5+ ions with excellent stability and repeatability. With the increase of annealing temperature, the structure of the films shrunk, crystalline size increased and the V4+ ions were oxidized to V5+ ions gradually; And V2O5 films had good electrochemical properties.

关 键 词：溶胶-凝胶技术 五氧化二钒薄膜 电化学 阴极材料 

分 类 号：O484.4[理学—固体物理]