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http://dx.doi.org/10.1021/nl404430e

has been cited by the following article:

• TITLE: Enhanced High-Temperature Cycling Stability of LiMn2O4 by LiCoO2 Coating as Cathode Material for Lithium Ion Batteries

  AUTHORS: Jing Yan, Haohan Liu, Yuelei Wang, Xinxin Zhao, Yiming Mi, Baojia Xia

  KEYWORDS: LiMn2O4, Sol-Gel Method, Surface Coating, Electrochemical Performance

  JOURNAL NAME: Journal of Materials Science and Chemical Engineering, Vol.2 No.12, December 17, 2014

  ABSTRACT: LiCoO2 surface layer is proposed and prepared through sol-gel method. The physical and electrochemical performances of pristine LiMn2O4 and LiCoO2-coated LiMn2O4 cathode materials were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, electrochemical measurements respectively. Comparing with the pristine LiMn2O4, the LiCoO2- coated LiMn2O4 phase significantly improved cycling stability, especially at 55°C. Additionally, the thermal safety of LiMn2O4 is greatly enhanced after being coated by LiCoO2. ICP-AES measurement, structural analysis, and impedance experiments indicate that the improved electrochemical property of LiCoO2-coated LiMn2O4 should be attributed to the alleviated dissolution loss of manganese, strengthened structural stability.