C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 31/04 (2006.01) C04B 35/528 (2006.01) C04B 35/64 (2006.01) C25B 11/12 (2006.01) H01M 10/04 (2006.01) H01M 4/58 (2006.01)
Patent
CA 2175297
A material for a negative electrode of a cell, which is prepared according to a process of the present invention, can provides a cell having a high true specific gravity, a high charging capacity and an excellent cycle characteristic. The process of the present invention comprises the steps of carbonizing an organic compound to form a carbide thereof, pulverizing said carbide to form a powder having an average particle size of 10 µm to 2 mm, and sintering said powder of the carbide at a temperature of 2,000° C or higher to produce a graphite. In addition, in accordance with the present invention, there is also provided non-aqueous electrolyte secondary cell comprising a negative electrode, which is prepared by carbonizing an organic compound to form a carbide thereof, pulverizing the carbide to form a powder having an average particle size of 10 µm to 2 mm, and sintering the powder of the carbide at a temperature of 2,000° C to form a graphite.
Nagamine Masayuki
Nakajima Naoyuki
Omaru Atsuo
Gowling Lafleur Henderson Llp
Sony Corporation
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