Cathode active material for secondary batteries and secondary battery including the same
US10014521B2 · kind B2 · utility
1Cited by
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17Claims
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Key dates
| Filing date | Jan 15, 2015 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Sep 28, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a cathode active material including a complex coating layer, which includes M below, formed on a surface of the cathode active material through reaction of a lithium transition metal oxide represented by Formula 1 below with a coating precursor: LixMO2 (1) wherein M is represented by MnaM′1-b, M′ is at least one selected from the group consisting of Al, Mg, Ni, Co, Cr, V, Fe, Cu, Zn, Ti and B, 0.95≤x≤51.5, and 0.5≤a≤1. The lithium secondary battery including the cathode active material exhibits improved lifespan and rate characteristics due to superior stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.