Electrode compositions having improved cycling behavior

Details Electrode compositions having improved cycling behavior Electrode compositions having improved cycling behavior

H - Electricity

01

M

H01M 4/38 (2006.01) B22F 7/04 (2006.01) H01M 4/02 (2006.01) H01M 4/40 (2006.01) H01M 4/62 (2006.01) H01M 4/04 (2006.01) H01M 4/36 (2006.01) H01M 10/44 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2450860

An electrode composition that includes a plurality of composite particles and a plurality of electrically conductive diluent particles admixed with the composite particles. Each of the composite particles includes an electrochemically active metal particle and an electrically conductive layer partially covering the particle. In one aspect, the layer is present in an amount no greater than about 75 wt.% of the composite, while in another aspect the layer is present in an amount no greater than about 75 vol.% of the composite. Also featured are lithium ion batteries featuring electrodes made from these compositions.

L'invention concerne une composition d'électrode comprenant une pluralité de particules composites ainsi qu'une pluralité de particules de dilution électroconductrices mélangées à ces particules composites. Chaque particule composite comprend une particule métallique électrochimiquement active ainsi qu'une couche électroconductrice recouvrant partiellement cette particule. Dans un aspect de l'invention, cette couche est présente dans une proportion n'excédant pas 75 % en poids du composite. Dans un autre aspect de l'invention, ladite couche est présente dans une proportion n'excédant pas 75 % en volume du composite. L'invention se rapporte en outre à des batteries au lithium-ion utilisant des électrodes fabriquées à partir de ces compositions.

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