多孔磷酸铁锂薄膜的制备与表征  

Synthesis and Characterization of LiFePO_4 Porous Thin Film

作　　者：展飞[1] 戴金辉[1] 吴平伟[1] 刘青[1] 刘文栋[1] 徐玉磊[1] 

机构地区：[1]中国海洋大学材料科学与工程研究院,青岛266100

出　　处：《材料导报》2014年第10期34-37,共4页Materials Reports

基　　金：山东省科技发展计划(2013GGX10210)

摘　　要：采用溶胶-凝胶技术与PS微球模板相结合,在铝基板上成功制备了亚微米连续蜂窝网状LiFePO4薄膜。采用XRD、SEM等测试手段对薄膜的组成及显微形貌进行了表征,研究了成膜工艺、涂膜方法及模板球直径等因素对薄膜形貌的影响规律,并对薄膜形成机理进行了初步探讨。结果表明,成膜过程中模板表面溶胶层与模板之间的作用力是影响薄膜结构的关键因素;对于600nm PS球模板和200nm PS球模板获得完好LiFePO4薄膜的最佳方法分别为浸渍提拉法和旋涂法。By the application of sol-gel technology combined with PS microsphere templates,continuous submicron honeycomb LiFePO4 film were prepared on the aluminum substrate.The combination of the film and its microstructure were characterized through different approaches,such as XRD,SEM and so on.Then the effect of film forming techniques,painting film method and the sphere diameter of template on the morphology of films was studied.Meanwhile,the formation mechanism of the film was also discussed preliminarily.It comes to the conclusion that during the process of film forming,the interaction force between the sol layer surface of template and the template will have a crucial effect to the film structure; as to the 600 nm PS template as a sphere and the 200 nm PS,the best approach to achieve a perfect LiFePO4 film is through dipping-coating method and spin-coating method.

关 键 词：溶胶-凝胶 LIFEPO4 PS球模板 薄膜 

分 类 号：TQ150[化学工程—电化学工业]