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Title: Graphene-based battery electrodes having continuous flow paths

Patent ·
OSTI ID:1136183

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.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Number(s):
8,758,947
Application Number:
13/004,138
OSTI ID:
1136183
Country of Publication:
United States
Language:
English

References (9)

Electrolyte for metal-oxygen battery and method for its preparation patent September 2009
Fluorination of multi-layered carbon nanomaterials patent September 2010
Protected active metal electrode and battery cell structures with non-aqueous interlayer architecture patent-application August 2005
Nanocomposite of graphene and metal oxide materials patent-application April 2010
Nano graphene reinforced nanocomposite particles for lithium battery electrodes patent-application June 2010
Lithium-Oxygen Electrochemical Cells and Batteries patent-application May 2011
Enhanced Cyclic Performance and Lithium Storage Capacity of SnO 2 /Graphene Nanoporous Electrodes with Three-Dimensionally Delaminated Flexible Structure journal January 2009
Chemical methods for the production of graphenes journal March 2009
Electrochemical Properties of Graphene Paper Electrodes Used in Lithium Batteries journal July 2009

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