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http://dx.doi.org/10.12925/jkocs.2005.22.2.7

Performance of Graphite Electrode Modified with Acid Treatment for Lithium Ion Secondary Battery  

Kim, Myung-Soo (Department of Chemical Engineering, Myongji University)
Moon, Seung-Hwan (Department of Chemical Engineering, Myongji University)
Kim, Mun-Geol (Department of Chemical Engineering, Myongji University)
Kim, Taek-Rae (Department of Chemical Engineering, Myongji University)
Hahm, Hyun-Sik (Department of Chemical Engineering, Myongji University)
Park, Hong-Soo (Department of Chemical Engineering, Myongji University)
Publication Information
Journal of the Korean Applied Science and Technology / v.22, no.2, 2005 , pp. 142-150 More about this Journal
Abstract
The natural graphite particles A and heat-treated graphite particles B at $1800\;^{\circ}C$ after pitch-coating were used as the anode base materials for lithium ion secondary battery. In order to improve the performance of anode materials, the base anode materials were treated with various acids. With the acid treatments of 62% $HNO_3$ and 95% $H_2SO_4$ aqueous solution, the specific surface area and electrical conductivity of base anode materials were increased, and the initial charge-discharge capacity and cycle performance were improved due to the elimination of structural defects.
Keywords
graphite electrode; acid treatment; lithium ion secondary battery;
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