溶胶-凝胶法制备LiCoO_2薄膜的研究  

A Study of Synthesis of LiCoO_2 Thin Films by Sol-gel Method

作　　者：黄祖飞[1] 魏英进[1] 刘伟[1] 徐晓光[1] 王春忠[1] 孟醒[1] 陈岗[1] 

机构地区：[1]吉林大学汽车材料教育部重点实验室,材料科学与工程学院长春130012

出　　处：《高等学校化学学报》2004年第5期810-813,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号 :5 0 2 72 0 2 3 );国家重点基础研究发展规划项目(批准号:2 0 0 2 CB2 1180 2 );教育部博士学科点基金(批准号 :2 0 0 10 183 0 3 1)资助

摘　　要：以 Li NO3和 Co( NO3) 2 为主要原料、采用溶胶 -凝胶旋涂法在 ( 1 1 1 )单晶硅片上制备了 Li Co O2 薄膜 . X射线衍射结果表明 ,涂液中 Li+ 离子和 Co2 + 离子的总浓度与配比可影响薄膜的成分 .薄膜的最佳烧结温度与最佳烧结时间分别为 60 0～ 70 0℃和 3 0～ 60 min.涂液中柠檬酸、聚乙烯乙二醇。Layered LiCoO 2 thin films were synthesized on the substrates of monocrystalline silicon(111) wafers by sol-gel and spin-coating methods. LiNO 3 and Co(NO 3) 2 were used as raw materials. XRD results show that the total concentration of metal ions(Li ++Co 2+) and the metal atomic ratio n(Li)/n(Co) in the coating solution can affect the composition in the films severely, and the best annealing temperature and time are between 600—700 ℃ and 30—60 min, respectively. Meanwhile, the contents of PEG, citric acid and deionized water in the coating solution and the speed of rising temperature have influence on the surface morphologies of the films strongly.

关 键 词：薄膜锂电池 钴酸锂薄膜 制备 溶胶-凝胶法 正极材料 

分 类 号：TM911.14[电气工程—电力电子与电力传动]