H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/13 (2010.01) H01M 4/139 (2010.01) H01M 4/485 (2010.01) H01M 4/587 (2010.01) H01M 10/0525 (2010.01) H01M 4/04 (2006.01) H01M 4/48 (2006.01) H01M 4/58 (2006.01) H01M 10/36 (2006.01)
Patent
CA 2678593
The present invention relates to a core-shell type anode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery comprising the same. The anode active material for a lithium secondary battery according to the present invention comprises a carbon based material core portion; and a shell portion formed outside of the carbon based material core portion by coating the carbon based material core portion with a spinel-type lithium titanium oxide. The anode active material for a lithium secondary battery according to the present invention has the metal oxide shell portion, and thus has the improved conductivity, a high output density, and consequently excellent electrical characteristics.
L'invention concerne une matière active d'anode de type coeur-écorce destinée à une batterie secondaire au lithium, un procédé de préparation correspondant, et une batterie secondaire au lithium la contenant. La matière active d'anode de l'invention comprend une partie coeur en carbone; et une partie écorce formée à l'extérieur de la partie coeur en carbone, par revêtement de la partie coeur avec un oxyde de lithium titane du type spinelle. La matière active d'anode destinée à une batterie secondaire au lithium de l'invention comprend une partie écorce d'oxyde métallique qui lui confère une conductivité améliorée, une densité de sortie élevée, et par conséquent, des caractéristiques électriques excellentes.
Heo Yoon-Jeong
Hong Ji-Jun
Ko Sung-Tae
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Kokam Co. Ltd.
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