Patent ID: 9419280
Filing Date: 2016-08-16
CPC Classification: C01B,H01M,Y02E,Y02P,Y10T

Claim Text:
1. A nonaqueous secondary battery, comprising: a cathode including a cathode active material; an anode; an electrolyte; and a separator, the cathode active material consisting of a composition represented by General Formula (1) below, where: Fe takes on a valence of +2 or +3; M has a valence of +3 or +4, and M is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from average valence of Fe; 0<x≦0.5; and 0<y≦1.0, the cathode active material having, in a case where the nonaqueous secondary battery has a voltage of 3.9 V or higher, a composition represented by General Formula (2) below,