Method for acid dissolution of LiCoO2 contained in spent lithium-ion batteries
US10490866B2 · kind B2 · utility
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Key dates
| Filing date | Oct 14, 2016 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Oct 14, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for the acid dissolution of LiCoO2 contained in the cathode of lithium ion batteries, using acetic or tartaric acid as leaching agent, the method being characterized in that it comprises a first stage and a second stage, wherein said first stage comprises the step of separating the cathode components, while said second stage comprises the step of dissolving the pure LiCoO2 with at least one acid. The method allows achieving an economically viable complete recycling process with low environmental impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.