Patent · US Active

Method for producing few-layer graphene

US9527745B2 · kind B2 · utility

1Cited by

0References

18Claims

0Family size

Inventors

Aiping Yu · Beijing, CN
Victor Chabot · Waterloo, CA
Zhongwei Chen · San Jose, US

Key dates

Filing date	Dec 20, 2013
Grant date	Dec 27, 2016
Priority date	—
Expiry date	Dec 20, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01B2204/04
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method of producing single or few-layer graphene comprises exfoliating graphite with a polymer to form a graphene-polymer composite and subsequently treating the composite to disassociate graphene. The exfoliation process is conducted using sonication. The graphene is disassociated from the polymer by a treatment step such as acid hydrolysis. The method results in highly pure graphene.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.