Nonaqueous electrolyte solution secondary battery

Details Nonaqueous electrolyte solution secondary battery Nonaqueous electrolyte solution secondary battery

H - Electricity

01

M

H01M 4/48 (2006.01) H01M 4/131 (2010.01) H01M 4/505 (2010.01) H01M 4/525 (2010.01) H01M 10/052 (2010.01)

Patent

CA 2341751

A positive electrode of a nonaqueous electrolyte solution secondary battery comprises (A) a lithium-manganese composite oxide and (B1) at least one lithium-nickel composite oxide which has a specific surface area X of 0.3 <= X(m2/g) and which is selected from a group consisting of LiNiO2, Li2NiO2, LiNi2O4, Li2Ni2O4 and LiNi1-x M x O2 (0 < x <= 0. 5 is satisfied, and M represents at least one metal element selected from a group consisting of Co, Mn, Al, Fe, Cu and Sr), whereby it is possible to obtain a nonaqueous electrolyte solution secondary battery which is superior in battery properties, especially charge and discharge cycle properties, retention properties and safety.

L'anode d'un accumulateur à électrolyte non aqueux contient (A) un oxyde d'un composé lithium-manganèse et (B1) un oxyde d'un composé lithium-nickel possédant une zone active spécifique (X) inférieure à 0,3 m<2>/g et se composant de l'un, au moins, des composés choisis dans le groupe constitué par LiNiO2, Li2NiO2, LiNi2O4, Li2Ni2O4, et LiNi1-xMxO2 (où 0<x</=0,5 et M représente au moins un élément métallique choisi dans le groupe constitué par Co, Mn, Al, Fe, Cu et Sr). Un tel accumulateur à électrolyte non aqueux possède d'excellentes caractéristiques d'accumulateur, notamment quant au cycle de charge/décharge et à la sécurité.

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