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Graphene-based battery electrodes having continuous flow paths

United States Patent

June 24, 2014
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
Some batteries can exhibit greatly improved performance by utilizing electrodes having randomly arranged graphene nanosheets forming a network of channels defining continuous flow paths through the electrode. The network of channels can provide a diffusion pathway for the liquid electrolyte and/or for reactant gases. Metal-air batteries can benefit from such electrodes. In particular Li-air batteries show extremely high capacities, wherein the network of channels allow oxygen to diffuse through the electrode and mesopores in the electrode can store discharge products.
Zhang; Jiguang (Richland, WA), Xiao; Jie (Richland, WA), Liu; Jun (Richland, WA), Xu; Wu (Richland, WA), Li; Xiaolin (Richland, WA), Wang; Deyu (Ningbo, CN)
Battelle Memorial Institute (Richland, WA)
13/ 004,138
January 11, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Contract DE-AC0576RL01830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.