Positive electrode active material for lithium secondary battery, preparing method thereof, and lithium secondary battery including positive electrode including the same
US10340510B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Nov 4, 2016 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Feb 25, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive electrode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery, the positive electrode active material including nickel, cobalt, and manganese, wherein the positive electrode active material has a core part and a surface part, an amount of manganese in the core part and the surface part is higher than 25 mol %, and amounts of nickel and cobalt in the positive electrode active material vary such that a concentration gradient of the nickel and the cobalt in a direction from the core part to the surface part is present in the positive electrode active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.