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Title: Coated particles for lithium battery cathodes

Patent ·
OSTI ID:1371751
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Particles of cathodic materials are coated with polymer to prevent direct contact between the particles and the surrounding electrolyte. The polymers are held in place either by a) growing the polymers from initiators covalently bound to the particle, b) attachment of the already-formed polymers by covalently linking to functional groups attached to the particle, or c) electrostatic interactions resulting from incorporation of cationic or anionic groups in the polymer chain. Carbon or ceramic coatings may first be formed on the surfaces of the particles before the particles are coated with polymer. The polymer coating is both electronically and ionically conductive.

Research Organization:
Seeo, Inc. Hayward, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0005449
Assignee:
Seeo, Inc.
Patent Number(s):
9,711,797
Application Number:
13/889,335
OSTI ID:
1371751
Resource Relation:
Patent File Date: 2013 May 07
Country of Publication:
United States
Language:
English

References (5)

Polymer composition for encapsulation of electrode particles patent January 2008
Positive electrode for lithium-sulfur battery, method of producing same, and lithium-sulfur battery patent-application February 2004
Electrodes With Solid Polymer Electrolytes patent-application January 2011
Inorganic Binders For Battery Electrodes And Aqueous Processing Thereof patent-application May 2011
Electrodes With Solid Polymer Electrolytes And Reduced Porosity patent-application November 2011

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25 ENERGY STORAGE