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Graphene macro-assembly-fullerene composite for electrical energy storage

United States Patent

9,870,871
January 16, 2018
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
Disclosed here is a method for producing a graphene macro-assembly (GMA)-fullerene composite, comprising providing a GMA comprising a three-dimensional network of graphene sheets crosslinked by covalent carbon bonds, and incorporating at least 20 wt. % of at least one fullerene compound into the GMA based on the initial weight of the GMA to obtain a GMA-fullerene composite. Also described are a GMA-fullerene composite produced, an electrode comprising the GMA-fullerene composite, and a supercapacitor comprising the electrode and optionally an organic or ionic liquid electrolyte in contact with the electrode.
Campbell; Patrick G. (Oakland, CA), Baumann; Theodore F. (Discovery Bay, CA), Biener; Juergen (San Leandro, CA), Merrill; Matthew (Dublin, CA), Montalvo; Elizabeth (Oakland, CA), Worsley; Marcus A. (Hayward, CA), Biener; Monika M. (San Leandro, CA), Hernandez; Maira Raquel Ceron (Livermore, CA)
Lawrence Livermore National Security, LLC (Livermore, CA)
15/ 260,197
September 8, 2016
FERDERAL FUNDING STATEMENT The Unilcd Slates 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.