Fluorinated graphene and preparation method thereof
US10850986B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 2017 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Sep 28, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/03
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a preparation method of fluorinated graphene. The method for preparing fluorinated graphene, including the following steps: S1), under the protection of inert gas, the graphene undergoes a fluorination reaction with a first fluorinating agent, the reaction temperature is 150-550° C., the reaction time is 2-20 h, and a fluorinated graphene crude product is obtained. The graphene is graphene powder, or a graphene film; the first fluorinating agent includes fluorine gas; S2), under the protection of inert gas, the fluorinated graphene crude product undergoes a fluorination reaction with a second fluorinating agent, the reaction temperature is 150-400° C., the reaction time is 2-10 h, and a fluorinated graphene is obtained. The second fluorinating agent is gas-phase fluoride. By using the method, fluorinated graphene having a high fluorine content can be prepared, the fluorine content is close to the theoretical level, and the defect density is low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.