Doped and coated lithium transition metal oxide cathode materials for batteries in automotive applications
US10490807B2 · kind B2 · utility
2Cited by
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14Claims
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Key dates
| Filing date | Mar 3, 2015 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Aug 14, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of Li metal oxide core particles having a general formula Li1+d(NixMnyCozZrkM′m)i−dO2±eAr; wherein Al2O3 is attached to the surface of the core particles; wherein 0≤d≤0.08, 0.2≤x≤0.9, 0<y≤0.7, 0<z≤0.4, 0≤m≤0.02, 0<k≤0.05, e<0.02, 0≤f≤0.02 and x+y+z+k+m=1; M′ consisting of either one or more elements from the group Al, Mg, Ti, Cr, V, Fe and Ga; A consisting of either one or more elements from the group F, P, C, CI, S, Si, Ba, Y, Ca, B, Sn, Sb, Na and Zn; and wherein the Al2O3 content in the powder is between 0.05 and 1 wt %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.