Graphene-based films
US10297396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2014 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Mar 23, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This present invention relates to a method of preparing graphene-based film, said method comprising: providing a first graphene-based film comprising sheets of graphene, graphene oxide, partially reduced graphene oxide, reduced graphene oxide, or a combination of two or more thereof, that are (i) arranged relative to each other in a substantially planar manner so as to form a layered structure, and (ii) at least partially separated by a liquid medium; exchanging said liquid medium with a packing density adjustment medium that comprises at least two components, wherein one of said components has a volatility greater than the other component; and removing at least some of the more volatile component from the first graphene-based film to produce a graphene-based film that has a different packing density of the graphene-based sheets relative to that of the first graphene-based film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.