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

Patent ·
OSTI ID:1532080
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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.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC06-76RL01830
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Number(s):
9,929,429
Application Number:
13/561,701
OSTI ID:
1532080
Resource Relation:
Patent File Date: 2012-07-30
Country of Publication:
United States
Language:
English

References (15)

A Soft Approach to Encapsulate Sulfur: Polyaniline Nanotubes for Lithium-Sulfur Batteries with Long Cycle Life journal January 2012
Fabrication and characteristics of a composite cathode of sulfonated polyaniline and Ramsdellite–MnO2 for a new rechargeable lithium polymer battery journal June 1999
Electrochemistry of Poly(2,2ʹ-dithiodianiline): A New Class of High Energy Conducting Polymer Interconnected with S[Single Bond]S Bonds journal January 1997
Energy storage device material from heterocyclic organic sulfur compounds and method of designing it patent-application August 2004
Aniline polymer electrode material and secondary cell patent June 2000
Positive active material of a lithium-sulfur battery and method of fabricating same patent April 2006
High capacity cathodes for secondary cells patent October 1995
Composite electrode, method of producing the same, and lithium secondary battery using the same patent June 2001
Electrochemical cells with high volumetric density of electroactive sulfur-containing materials in cathode active layers patent October 2001
Degradation Kinetics of Polyaniline Base and Sulfonated Polyaniline journal November 1994
Elemental sulfur journal June 1976
Nanoassemblies of sulfonated polyaniline multilayers journal February 2000
Electroactive polymers of high sulfur content for use in electrochemical cells patent November 2003
Lithium-Sulfur Battery and Cathode Therefore patent-application September 2009
A nano-structured and highly ordered polypyrrole-sulfur cathode for lithium–sulfur batteries journal August 2011

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