Method for making electrode active material of lithium ion battery
US8901251B2 · kind B2 · utility
1Cited by
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15Claims
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Key dates
| Filing date | Nov 5, 2012 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Apr 18, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for making an electrode active material of a lithium ion battery is disclosed. In the method, elemental sulfur is mixed with a polyacrylonitrile to form a mixture. The mixture is heated in vacuum or a protective gas at a heating temperature of about 250° C. to about 500° C., to form a sulfur containing composite. The sulfur containing composite is reacted with a reducing agent for elemental sulfur in a liquid phase medium to remove part of the elemental sulfur from the sulfur containing composite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.