Positive electrode material, electrochemical device containing same, electronic device, and method for preparing the positive electrode material
US12126016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Aug 26, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive electrode material includes a lithium composite oxide, and the positive electrode material comprises stress relief particles. There are cavities inside the stress relief particles, and the cavities are closed structures. The positive electrode material that includes the stress relief particles can be used to effectively tackle a stress and relieve the stress in advance, relieve a strain of the positive electrode material used at a high voltage, avoid ruptures of particles of the positive electrode material, and enhance structural stability of the positive electrode material. The positive electrode material and the electrochemical device having the positive electrode material achieve good high-voltage cycle performance and cycle stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.