Patent ID: 9537140
Date: 2017-01-03
CPC Classifications: C01G,C01P,H01M,Y02E,Y02T

Claim:
1. A manganese spinel-type lithium transition metal oxide represented by formula: Li[Ni y Mn 2-(a+b)-y-z Li a Ti b M z ]O 4 , wherein 0≦z≦0.3, 0.3≦y<0.6, and M=at least one or more metal elements selected from the group consisting of Al, Mg, Fe and Co, having a crystal structure of space group Fd-3m, wherein in the above formula, the Ni y , Mn 2-(a+b)-y-z , Li a , Ti b and M z exist in 16d sites in the crystal structure of the space group Fd-3m, a molar ratio of Li (a) existing in the 16d sites is a>0, a molar ratio of Ti (b) existing in the 16d sites is b>0, a total molar ratio of Li, Ti, Ni, and M (a+b+y+z) existing in the 16d sites is 0.3<(a+b+y+z), and the molar ratio of Ti with respect to Li (b/a) existing in the 16d sites is 3≦b/a≦8, the manganese spinel-type lithium transition metal oxide exhibiting an operating potential of 4.5 V or more.