Method for the recovery of lithium cobalt oxide from lithium ion batteries
US9972830B2 · kind B2 · utility
2Cited by
14References
17Claims
0Family size
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Key dates
| Filing date | Jun 19, 2012 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Mar 9, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of recovering lithium cobalt oxide from spent lithium ion batteries, wherein said method is more environmentally friendly than the methods presently known in the art. The method includes a froth flotation step using renewable and biodegradable solvents such as terpenes and formally hydrated terpenes. The method can also include a relithiation step to return the Li:Co ratio back to about 1:1 for use in second-life applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.