| 摘要 |
Provided is a lithium-iron-manganese-based composite oxide which is capable of providing a lithium-ion secondary battery that has high capacity retention in a charge and discharge cycle and in which emission of gas due to the charge and discharge cycle is reduced. This lithium-iron-manganese-based composite oxide has a layered rock-salt type structure and is represented by the formula, LixM1 (y-p)MnpM2 (z-q)FeqO(2-δ) (in the formula, 1.05≤x≤1.32, 0.33≤y≤0.63, 0.06≤z≤0.50, 0<p≤0.63, 0.06≤q≤0.50, 0≤δ≤0.80, y≥p, and z≥q, M1 is at least one element out of Ti and Zr, and M2 is at least one element selected from the group consisting of Co, Ni, and Mn), wherein at least a portion of a surface of the lithium-iron-manganese-based composite oxide is coated with an oxide of at least one metal selected from the group consisting of La, Pr, Nd, Sm, and Eu. |
| 申请人 |
NEC CORPORATION;NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY;TANAKA CHEMICAL CORPORATION |
发明人 |
YUGE, Ryota;TAMURA, Noriyuki;HATTORI, Sadanori;TABUCHI, Mitsuharu;KURATANI, Kentaro;DOUMAE, Kyousuke;SHIBUYA, Hideka |
