Title: Carbon material, production method and use thereof
Application Number: 02818759 Application Date: 2002.09.20
Publication Number: 1559092 Publication Date: 2004.12.29
Approval Pub. Date: 2007.05.16 Granted Pub. Date: 2007.05.16
International Classifi-cation: H01M4/58;C04B35/524;C09C1/48;C04B35/532;H01M4/02;C01B31/04
Applicant(s) Name: Showa Denko KK Address:
Inventor(s) Name: Sotowa Chiaki;Sudo Akinori
Attorney & Agent: lin bainan liu jinhui
Abstract:
    A carbon material includes carbon particles having a graphite structure, the particles having a carbonaceous material deposited on at least a portion of the surface thereof, and fibrous carbon. In the carbon material, the carbonaceous material is obtained by subjecting a composition containing a polymer to heat treatment. The fibrous carbon is preferably deposited to the carbon particles through a carbonaceous material obtained by subjecting a composition containing a polymer. As a result, when the carbon material is used as a negative electrode active material for a secondary battery, the electrical conductivity can be improved and large current load enduring characteristics and cycle characteristics can be improved. By coating the carbonaceous material onto the carbon particles having a graphite structure, destruction of the graphite structure by the polyethylene carbonate-based electrolytic solution can be prevented.
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