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

Abstract

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

CLC Number:

O614

TrendMD:

HUANG Zu-Fei, WEI Ying-Jin, LIU Wei, XU Xiao-Guang, WANG Chun-Zhong, MENG Xing, CHEN Gang . A Study of Synthesis of LiCoO₂ Thin Films by Sol-gel Method[J]. Chem. J. Chinese Universities, 2004, 25(5): 810.

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

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