| abstract |
Provided is a lithium transition metal oxide which exhibits excellent characteristics in a charge / discharge depth region mainly used in batteries mounted on EVs and HEVs, and particularly exhibits excellent thermal stability at SOC = 50%. To do. SOLUTION: General formula Li 1 + x M 1-xy M ′ y O 2−δ (where M is an element composed of any one element of Mn, Co and Ni or a combination of two or more thereof) M ′ is a lithium transition metal oxide represented by any one of typical elements up to three periods in the periodic table, or an element composed of a combination of two or more thereof. The crystal structure belongs to the trigonal crystal of the space group R-3m, the oxygen site occupancy obtained by the Rietveld method is 0.982 <oxygen site occupancy ≦ 0.997, and the distance between the 3b site and the 6c site Proposes a lithium transition metal oxide having a layered structure, characterized in that 1.92Å ≦ 3b site−6c site distance <1.95Å. [Selection figure] None |