Patent ID: 9331332
Filing Date: 2016-05-03
CPC Classification: H01M,Y02E

Claim Text:
1. A nonaqueous electrolyte battery comprising: a positive electrode; a negative electrode; and a nonaqueous electrolyte; wherein the capacity per unit area of the negative electrode is larger than that of the positive electrode, wherein the negative electrode comprises a first negative electrode active material comprising a monoclinic β-type titanium composite oxide and a second negative electrode active material, the second negative electrode active material causing insertion and release of lithium ion in a potential range from 0.8 V to 1.5 V relative to metallic lithium, wherein a ratio AB of a mass A of the first negative electrode active material to a mass B of the second negative electrode active material is in a range from 1 to 20, and wherein the second negative electrode active material is selected from: a transition metal-containing oxide selected from the group consisting of a titanium-containing oxide having a crystal structure belonging to a space group Cmca and an oxide containing one or more elements of Fe, Co, Ni, Cu, or Mo, and a titanium-containing oxide represented by a formula of Li