Potato-shaped graphite particles with low impurity rate at the surface, method for preparing the same
US9444092B2 · kind B2 · utility
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33Claims
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Key dates
| Filing date | Oct 2, 2009 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Nov 6, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Modified graphite particles obtained from graphite or based on graphite, the said particles having impurities in their internal structure and having on the surface a low, even nil, rate of an impurity or several impurities. In addition, these particles have at least one of the following characteristics: These particles can be used for fuel cells, electrochemical generators, or as moisture absorbers and/or oxygen absorbers and they have important electrochemical properties. The electrochemical cells and batteries thus obtained are stable and safe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.