Chem. J. Chinese Universities

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Hydrothermal Synthesis and Spectroscopic Studies of Li1.06Mn0.8Cr0.14O2

ZHAO Li-Zhu1,2, CHEN Gang1, ZHANG Li-Juan1   

    1. College of Materials Science and Engineering, Jilin University, Changchun 130012, China;
    2. College of Physics, Northeast Normal University, Changchun 130024, China
  • Received:2005-10-21 Revised:1900-01-01 Online:2006-10-10 Published:2006-10-10
  • Contact: CHEN Gang

Abstract: The Cr-doped lithium manganese oxide was prepared by the hydrothermal technique. Structural characterization based on X-ray diffraction and Raman spectroscopy reveals that Li1.06Mn0.8Cr0.14O2 possesses a hexagonal crystal structure which is much favorable for improving electrochemical properties of the material. X-ray photoelectron spectroscopy(XPS) shows that the average oxidation state of Mn of the layered Li1.06Mn0.8Cr0.14O2 is more than Mn3+. This result should restrain Jahn-Teller effect and trend a stable structure for the material.

Key words: Hydrothermal synthesis, Hexagonal Li1.06Mn0.8Cr0.14O2, Jahn-Teller distortion

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