Method for recovering positive electrode active material from lithium secondary battery
US11031632B2 · kind B2 · utility
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2References
12Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 10, 2018 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Feb 17, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for recovering a positive electrode active material from a lithium secondary battery including: 1) separating a positive electrode into a collector and a positive electrode part; 2) removing an organic substance by firing the separated positive electrode part; 3) washing the fired resultant and removing remaining fluorine (F); 4) adding a lithium-containing material into the washed resultant and firing to recover a lithium transition metal oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.