Stabilized electrochemical cell active material

Details Stabilized electrochemical cell active material Stabilized electrochemical cell active material

H - Electricity

01

M

H01M 4/505 (2010.01) H01M 4/131 (2010.01) H01M 10/052 (2010.01) C01G 45/00 (2006.01)

Patent

CA 2370892

A composition and a method for forming the composition stabilized against capacity degradation comprises particles of spinal lithium manganese oxide (LMO) enriched with lithium by a decomposition product of lithium carbonate forming a part of each said particle and characterized by a reduced surface area and increased capacity expressed in milliamp hours per gram as compared to non-enriched spinal.

La présente invention concerne une composition et un procédé permettant de réaliser une telle composition, laquelle composition est stabilisée de façon à empêcher une dégradation de capacité. Cette composition comprend des particules de spinelles d'oxyde de lithium et de manganèse (LMO) enrichis de lithium par un produit de décomposition du carbonate de lithium et formant une partie de chaque particule considérée. Cette composition se distingue par une superficie spécifique réduite pour une capacité accrue (exprimée en mA-h/g) par rapport aux spinelles non enrichis.

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