High discharge capacity lithium battery
US8007940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2010 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Feb 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2300/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium/iron disulfide electrochemical battery cell with a high discharge capacity. The cell has a lithium negative electrode, an iron disulfide positive electrode and a nonaqueous electrolyte. The iron disulfide of the positive electrode has a controlled average particle size range which allows the electrochemical cells to exhibit desired properties in both low and high rate applications. In various embodiments, the iron disulfide particles are wet milled, preferably utilizing a media mill or milled utilizing a non-mechanical mill such as a jet mill, which reduces the iron disulfide particles to a desired average particle size range for incorporation into the positive electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.