Electrode compositions having improved cycling behavior
Assignee3M Innovative Properties Company
InventorsLarry J. Krause, James R. Landucci, Kevin W. Eberman
Life of this patent
Estimating the term…
Abstract
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.
Claims26
An electrode composition comprising:
- (a) a plurality of composite particles, each of which comprises (i) an electrochemically active metal particle and (ii) an electrically conductive layer partially covering said particle,
- wherein said layer is present in an amount no greater than about 75 wt. % of said composite;
- and
- (b) a plurality of electrically conductive diluent particles admixed with said composite particles.
An electrode composition comprising:
- (a) a plurality of composite particles, each of which comprises (i) an electrochemically active metal particle and (ii) an electrically conductive layer partially covering said particle,
- wherein said layer is present in an amount no greater than about 75 vol. % of said composite;
- and
- (b) a plurality of electrically conductive diluent particles admixed with said composite particles.
A lithium ion battery comprising:
- (A) a first electrode comprising:
- (a) a plurality of composite particles, each of which comprises (i) an electrochemically active metal particle and (ii) an electrically conductive layer partially covering said particle,
- wherein said layer is present in an amount no greater than about 75 wt. % of said composite;
- and
- (b) a plurality of electrically conductive diluent particles admixed with said composite particles;
- (B) a counterelectrode;
- and
- (C) an electrolyte separating said electrode and said counterelectrode.
A lithium ion battery comprising:
- (A) a first electrode comprising:
- (a) a plurality of composite particles, each of which comprises (i) an electrochemically active metal particle and (ii) an electrically conductive layer partially covering said particle,
- wherein said layer is present in an amount no greater than about 75 vol. % of said composite;
- and
- (b) a plurality of electrically conductive diluent particles admixed with said composite particles;
- (B) a counterelectrode;
- and
- (C) an electrolyte separating said electrode and said counterelectrode.
Dependencies are inferred from the claim text.