Forming gas treatment of lithium ion battery anode graphite powders
US8834829B2 · kind B2 · utility
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17Claims
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Assignee
Inventors
Key dates
| Filing date | Aug 28, 2012 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Apr 19, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides a method of making a battery anode in which a quantity of graphite powder is provided. The temperature of the graphite powder is raised from a starting temperature to a first temperature between 1000 and 2000° C. during a first heating period. The graphite powder is then cooled to a final temperature during a cool down period. The graphite powder is contacted with a forming gas during at least one of the first heating period and the cool down period. The forming gas includes H2 and an inert gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.