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http://dx.doi.org/10.12925/jkocs.2003.20.2.8

Fabrication of Carbon Nanofiber/Graphite Electrodes for Lithium Ion Secondary Battery  

Kwon, kyong-Hee (Department of Chemical Engineering, Myongji University)
Moon, Seung-Hwan (Department of Chemical Engineering, Myongji University)
Kim, Myung-Chan (Department of Chemical Engineering, Myongji University)
Oh, Se-Min (Carbonix, Inc.)
Kim, Myung-Soo (Department of Chemical Engineering, Myongji University)
Publication Information
Journal of the Korean Applied Science and Technology / v.20, no.2, 2003 , pp. 130-140 More about this Journal
Abstract
In order to improve the lithium ion battery's performance, the carbon nanofibers were introduced to the anode electrode fabricated with natural graphite particles. The influence of structural adjustment of the particles by the introduction method of carbon nanofibers and the content of carbon nanofibers on the electrical property and charge/discharge characteristics of the electrode were investigated. The electrode fabricated with the mixture of 10 wt% of carbon nanofibers grown separately and 90 wt% of graphite particles showed an excellent discharge capacity of 400 mAh/g and the improved cycle performance. The improved performance could be explained by that the carbon nanofibers shortened and uniformly distributed on the surface of graphite particles by ball milling increased the stability for the intercalation/deintercalation of lithium ion and increased the electrical conductivity due to the closed packing between graphite particles.
Keywords
carbon nanofiber; graphite; lithium ion secondary battery;
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