Electrode active material and lithium secondary battery

Details Electrode active material and lithium secondary battery Electrode active material and lithium secondary battery

H - Electricity

01

M

H01M 4/36 (2006.01)

Patent

CA 2682094

Electrode active material that is used together with an electrolyte solution having an electrolyte decomposition potential Ve is represented by the general expression LixFeMyO2 and is amorphous. In the expression, x and y are values which independently satisfy 1 < x <= 2.5 and O < y <= 3, respectively, and z = (x + (valence of Fe) + (valence of M) x y) / 2 to satisfy stoichiometry, and M represents one or two or more types of glass former element. The average electronegativity of M is less than (Ve + 6.74 / 5.41.

La présente invention concerne un matériau actif d'électrode qui est utilisé conjointement à une solution électrolytique qui possède un potentiel de décomposition électrolytique Ve qui est représenté par l'expression générale LixFeMyO2 et est amorphe. Dans l'expression, x et y sont des valeurs qui satisfont indépendamment 1 < x <= 2,5 et O < y <= 3, respectivement, et z = (x + (valence de Fe) + (valence de M) x y) / 2 pour satisfaire la stAEchiométrie, et M représente un ou deux types ou plus d'élément de formation de verre. L'électronégativité moyenne de M est inférieure à (Ve + 6,74 / 5,41).

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