Cathode material for Li-ion battery, method for preparing the same and Li-ion battery containing the same
US10283772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2017 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Aug 17, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to the field of the Li-ion battery and, particularly, relates to a cathode material for the Li-ion battery, a method for preparing the same and a Li-ion battery containing the same. A surface of the cathode material of spinel type lithium-manganese-nickel-containing composite oxide of the present invention is coated with a complex coating layer composed of a first coating layer containing Li7La3Zr2O12 and a second coating layer containing LiNbO3. The method includes: firstly coating the first coating layer containing Li7La3Zr2O12 on the surface of spinel type lithium-manganese-nickel-containing composite oxide in a solid phase method; and then coating the second coating layer containing LiNbO3 in a hydro-thermal method. The cathode material of the present invention improves cycle stability and rate performance of spinel type lithium-manganese-nickel-containing composite oxide, and meanwhile reduces dissolution and erosion effect of the electrolyte on the cathode material during charging or discharging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.