Method for preparing positive electrode material for secondary cell, and secondary cell
US7491468B2 · kind B2 · utility
25Cited by
4References
8Claims
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Key dates
| Filing date | Oct 17, 2003 |
| Grant date | Feb 17, 2009 |
| Priority date | — |
| Expiry date | Dec 3, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for producing a cathode material for a secondary battery, characterized in that it comprises admixing a compound liberating a phosphate ion in a solution (phosphoric acid H3PO4, phosphorus pentoxide PO5, ammonium dihydrogenphosphate NH4H2PO4 and the like), water and metallic iron, adding lithium carbonate, lithium hydroxide or a hydrate thereof to the resultant mixture, and firing the resultant reaction product, to thereby synthesize LiFePO4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.