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Polymer-sulfur composite materials for electrodes in Li-S energy storage devices

United States Patent

9,929,429
March 27, 2018
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
Composite materials containing sulfurized polymers and sulfur-containing particles can be used in lithium-sulfur energy storage devices as a positive electrode. The composite material exhibits relatively high capacity retention and high charge/discharge cycle stability. In one particular instance, the composite comprises a sulfurized polymer having chains that are cross-linked through sulfur bonds. The polymer provides a matrix in which sulfide and/or polysulfide intermediates formed during electrochemical charge-discharge processes of sulfur can be confined through chemical bonds and not mere physical confinement or sorption.
Liu; Jun (Richland, WA), Cao; Yuliang (Wuhan, CN), Xiao; Lifen (Wuhan, CN), Xiao; Jie (Richland, WA), Exarhos; Gregory J. (Richland, WA), Schwenzer; Birgit (Richland, WA), Nie; Zimin (Richland, WA)
Battelle Memorial Institute (Richland, WA)
13/ 561,701
20130040197
July 30, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Contract DE-AC0576RLO1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.