Cathode active material for lithium battery and method for making the same
US8431050B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 16, 2010 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Sep 18, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a cathode active material for lithium battery including a metal oxide represented by a formula of LiNi0.5Mn0.5-x-yCoxMgyO2, wherein 0.05≦x≦0.15 and 0.01≦y≦0.1. The present disclosure also relates to a method for making a cathode active material including steps of dissolving Ni, Mn, Co, and Mg sources to the liquid solvent at a molar ratio of Ni/Mn/Co/Mg=0.5/(0.5−x−y)/x/y, wherein 0.05≦x≦0.15, and 0.01≦y≦0.1 to achieve a liquid solution, adding a precipitant into the liquid solution, to achieve a coprecipitation, separating the coprecipitation from the liquid solution, and heating the coprecipitation mixed with a Li source at a temperature of about 600° C. to about 900° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.