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Title: Graphene-based battery electrodes having continuous flow paths

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.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
1136183
Assignee:
Battelle Memorial Institute (Richland, WA) PNNL
Patent Number(s):
8,758,947
Application Number:
13/004,138
Contract Number:
AC05-76RL01830
Research Org:
PNNL (Pacific Northwest National Laboratory (PNNL), Richland, WA (United States))
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Other works cited in this record:

Protected active metal electrode and battery cell structures with non-aqueous interlayer architecture
patent-application, August 2005

Chemical methods for the production of graphenes
journal, March 2009
  • Park, Sungjin; Ruoff, Rodney S.
  • Nature Nanotechnology, Vol. 4, Issue 4, p. 217-224
  • DOI: 10.1038/nnano.2009.58

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