Positive electrode material and lithium-ion battery
US10741834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2018 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Oct 31, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The examples of the present application provide a positive electrode material and a lithium-ion battery. The positive electrode material comprises: a substrate material; and a coating material formed on at least one part of a surface of the substrate material; the general formula of the substrate material being LixCoyM1-yO2, wherein 1.0≤x≤1.2, 0.8≤y≤1.0 and M is at least one selected from the group consisting of Mg, Ti, Al, Zr, Ni, Mn; the coating material includes Y2O3 and at least two selected from the group consisting of La2O3, ZrO2 and CeO2. The examples of the present application enable the battery prepared by the provided positive electrode material to have a lower storage expansion ratio, a higher capacity retention ratio, and improved cycle performance at a high charge cutoff voltage by the interaction of at least three kinds of oxides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.