Method for preparing sulfur-polyacrylonitrile (SPAN)
US12428506B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2022 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Aug 1, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2300/0082
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods for forming sulfur polyacrylonitrile are provide. In certain variations, the method includes contacting sulfur and polyacrylonitrile to form an admixture, sealing a container holding the admixture, heating the admixture to a first temperature venting the container holding the admixture to release gases generated during the heating of the admixture to the first temperature, re-sealing the container holding the admixture, and heating the admixture to a second temperature. In other variations, the method includes contacting sulfur and polyacrylonitrile to form an admixture, heating the admixture to a first temperature, sealing a container holding the admixture, and heating the admixture to a second temperature. The second temperature is greater than the first temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.