Graphene-based battery electrodes having continuous flow paths

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:: Zhang, Jiguang; Xiao, Jie; Liu, Jun; Xu, Wu; Li, Xiaolin; Wang, Deyu

Issue Date:: 2014-05-24

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

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Works referenced in this record:

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

Visco, Steven J.; , Bruce D
US Patent Application 10/824944; 20050175894
URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220050175894%22.PGNR.&OS=DN/20050175894&RS=DN/20050175894

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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