Nonaqueous electrolyte secondary battery

The present invention relates to a nonaqueous electrolyte secondary battery characterized as using a mixture of a first oxide, a second oxide and a third oxide for its positive electrode material, said first oxide being a spinel oxide consisting substantially of lithium, manganese, a metal other than manganese, and oxygen, said second oxide being different from the first oxide and consisting substantially of lithium, nickel, cobalt, a metal other than nickel and cobalt, and oxygen, and said third oxide being different from the first and second oxides and consisting substantially of lithium, cobalt and oxygen or of lithium, cobalt, a metal other than cobalt, and oxygen.