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High-density 3D graphene-based monolith and related materials, methods, and devices

United States Patent

9,601,226
March 21, 2017
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A composition comprising at least one high-density graphene-based monolith, said monolith comprising a three-dimensional structure of graphene sheets crosslinked by covalent carbon bonds and having a density of at least 0.1 g/cm.sup.3. Also provided is a method comprising: preparing a reaction mixture comprising a suspension and at least one catalyst, said suspension selected from a graphene oxide (GO) suspension and a carbon nanotube suspension; curing the reaction mixture to produce a wet gel; drying the wet gel to produce a dry gel, said drying step is substantially free of supercritical drying and freeze drying; and pyrolyzing the dry gel to produce a high-density graphene-based monolith. Exceptional combinations of properties are achieved including high conductive and mechanical properties.
Worsley; Marcus A. (Hayward, CA), Baumann; Theodore F. (Discovery Bay, CA), Biener; Juergen (San Leandro, CA), Charnvanichborikarn; Supakit (Livermore, CA), Kucheyev; Sergei (Oakland, CA), Montalvo; Elizabeth (Oakland, CA), Shin; Swanee (Emeryville, CA), Tylski; Elijah (Platte City, MO)
Lawrence Livermore National Security, LLC (Livermore, CA)
13/ 844,340
20140178289
March 15, 2013
FEDERAL FUNDING STATEMENT The United States Government has rights in the invention pursuant to Contract No. DE-AC52-07NA27344 between the U.S. Department of Energy and Lawrence Livermore National Security, LLC, for the operation of Lawrence Livermore National Laboratory.