Method for production of Li2MSiO4 electrode materials
US9166229B2 · kind B2 · utility
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Key dates
| Filing date | Mar 19, 2013 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Nov 30, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for the production of Li2MSiO4 where M is selected from the group Fe, Mn, Co, and Ni, is disclosed. The process uses an atmospheric-pressure solvothermal synthesis and a calcining step wherein the solvent is selected to be stable from decomposition over the solvothermal process conditions. The solvothermal solvent is recoverable and reusable. The process also relies on an excess of lithium in the starting materials mix to promote phase-purity of the Li2MSiO4 crystalline phase. The Li2MSiO4 material is used as a cathode material in a lithium ion battery cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.