Preparation of Nano-Particles of Transition Metal Oxides Using Ball-Milling and its Application for Lithium Battery

Abstract:

Lithium ion battery prefers an electrode consist of small particles so as to allow giving short Li+ diffusion pathway. In order to obtain small particles of LiCoO², which has been commonly used as cathode for lithium battery, the ball-milling is applied to LiCoO2 prepared through a sol-gel method. By the ball-milling, the particle size of LiCoO2 can be reduced from 400 to 250 nm. The discharge capacity of milled LiCoO2 under high current density of 5C is about 100 mA h g-1, that is much higher than non-milled LiCoO2 (60 mA h g-1). It is concluded that the small LiCoO2 prepared by the ball-milling possess superior performance due to short Li+ diffusion length.

• Periodical: Advanced Materials Research (Volumes 622-623)
• Pages: 955-958
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.622-623.955
• Online since: December 2012
• Authors: Masashi Kotobuki
• Keywords: Ball-milling, Electrode, Lithium Battery, Nanoparticle

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