Lithium-rich manganese-based cathode material, its preparation method and lithium-ion battery
US10446844B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2015 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Jul 24, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method for preparing lithium-rich manganese-based cathode material. The method comprises: dispersing α-MnO2 micron particles, a nickel salt and a lithium-containing compound in a solvent to obtain a mixture, then evaporating the mixture to remove the solvent, and calcining the solid product obtained from the evaporation; wherein the lithium-containing compound is a lithium salt and/or lithium hydroxide. The present invention also provides a lithium-rich manganese-based cathode material prepared by the above method. The present invention also provides a lithium-ion battery of which anode material contains the foregoing lithium-rich manganese-based anode material. The lithium-rich manganese-based cathode material provided by the present invention has high rate capability and prolonged cycle stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.