Back to results
US 11,814,292 B2Granted
Methods of graphene production and compositions thereof
AssigneeNanotech Energy, Inc.
InventorsMaher F. El-Kady, Zhiwei Peng, Reta Betar Farah
Life of this patent
Estimating the term…
Abstract
Provided herein compositions of activated graphene oxide (AGO) and activated reduced graphene oxide (ARGO) and methods of producing thereof. The AGO and ARGO provided herein exhibit high surface areas and conductivities, and the methods herein enable facile production at large scales.
Claims21
A method for forming activated graphene oxide sheets, the method comprising:
- heating a first solution comprising at least about 60% by volume of an etchant and graphene oxide to form activated graphene oxide sheets comprising in-plane pores;
- filtering the first solution to purify the activated graphene oxide sheets;
- and
- spray drying the activated graphene oxide sheets wherein an outlet temperature of the spray drying is at least about 30° C.,
- wherein the activated graphene oxide sheets have a D:G ratio of about 0.1:1 to about 1:1.5.
2 more elements
A method for forming activated graphene oxide sheets, the method comprising:
- heating a first solution comprising an etchant and graphene oxide to form activated graphene oxide sheets comprising in-plane pores;
- filtering the first solution to purify the activated graphene oxide sheets;
- and
- spray drying the activated graphene oxide sheets wherein an outlet temperature of the spray drying is at least about 30° C.,
- wherein the spray drying is performed with an inlet temperature of about 120° C. to about 200° C.
2 more elements
Dependencies are inferred from the claim text.