高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (5): 810.

• 研究论文 • 上一篇    下一篇

溶胶-凝胶法制备LiCoO2薄膜的研究

黄祖飞, 魏英进, 刘伟, 徐晓光, 王春忠, 孟醒, 陈岗   

  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
  • 收稿日期:2003-06-13 出版日期:2004-05-24 发布日期:2004-05-24
  • 通讯作者: 陈　岗(1958年出生),男,博士,教授,博士生导师,从事材料物理与化学研究.E-mail:jzhan@jlu.edu.cn E-mail:jzhan@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:50272023);国家重点基础研究发展规划项目(批准号:2002CB211802);教育部博士学科点基金(批准号:20010183031)资助

A Study of Synthesis of LiCoO2 Thin Films by Sol-gel Method

HUANG Zu-Fei, WEI Ying-Jin, LIU Wei, XU Xiao-Guang, WANG Chun-Zhong, MENG Xing, CHEN Gang   

  1. Key Laboratory of Automobile Materials, Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130012, China
  • Received:2003-06-13 Online:2004-05-24 Published:2004-05-24

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摘要： 以LiNO3和Co(NO3)2为主要原料、采用溶胶-凝胶旋涂法在(111)单晶硅片上制备了LiCoO2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600～700℃和30～60min.涂液中柠檬酸、聚乙烯乙二醇、去离子水的含量与热处理时的升温速率对薄膜的形貌有很大影响.

关键词: 溶胶-凝胶法, LiCoO2薄膜, X射线衍射, 锂电池

Abstract: Layered LiCoO2 thin films were synthesized on the substrates of monocrystalline silicon(111) wafers by sol-gel and spin-coating methods. LiNO3 and Co(NO3)2 were used as raw materials. XRD results show that the total concentration of metal ions(Li++Co2+) 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.

Key words: Sol-gel method, LiCoO2 thin films, XRD, Lithium batteries

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