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http://dx.doi.org/10.5229/JKES.2009.12.3.239

The Effect of Electrochemical Performance and Safety by Surface Modification of Anode Materials for Lithium Secondary Battery  

Heo, Yoon-Jeong (Kokam Co., Ltd. Battery Research Institute)
Ko, Sung-Tae (Kokam Co., Ltd. Battery Research Institute)
Publication Information
Journal of the Korean Electrochemical Society / v.12, no.3, 2009 , pp. 239-244 More about this Journal
Abstract
This paper aims to report the effect of surface treatment on graphite and its effect on the improvement of $Al_2O_3$ and $nano-Li_4Ti_5O_{12}$. The structure and property of surface treatment on graphite were determined by scanning electron microscopy, transmission electron microscopy and electrochemical property and safety were determined by charge/discharge cycler, accelerating rate calorimeter. The composite with different metallic oxide exhibited the first efficiency of 82.5% and specific capacity of 350 mAh/g. Although the composite showed same efficiency and specific capacity at first cycle, surface treatment on graphite by $nano-Li_4Ti_5O_{12}$ exhibited a higher charge/discharge rate, cycle life and thermal stability.
Keywords
Anode material; Surface treatment; Nano particles; Lithium secondary battery;
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