Lithium-iron-manganese-based composite oxide and lithium-ion secondary battery using same
US10164250B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 19, 2014 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | May 7, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a lithium-iron-manganese-based composite oxide capable of providing a lithium-ion secondary battery which has a high capacity retention rate in charge/discharge cycles and in which the generation of a gas caused by charge/discharge cycles is reduced. A lithium-iron-manganese-based composite oxide having a layered rock-salt structure, wherein at least a part of the surface of a lithium-iron-manganese-based composite oxide represented by the following formula (1) is coated with an inorganic material: LixM1(y-p)MnpM2(z-p)FeqO(2-δ) (1) (wherein 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 selected from Ti and Zr; and M2 is at least one element selected from the group consisting of Co, Ni and Mn).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.