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Title: Small domain-size multiblock copolymer electrolytes

New block polymer electrolytes have been developed which have higher conductivities than previously reported for other block copolymer electrolytes. The new materials are constructed of multiple blocks (>5) of relatively low domain size. The small domain size provides greater protection against formation of dendrites during cycling against lithium in an electrochemical cell, while the large total molecular weight insures poor long range alignment, which leads to higher conductivity. In addition to higher conductivity, these materials can be more easily synthesized because of reduced requirements on the purity level of the reagents.
Inventors:
;
Issue Date:
OSTI Identifier:
1325535
Assignee:
Seeo, Inc. (Hayward, CA) NETL
Patent Number(s):
9,450,272
Application Number:
13/862,442
Contract Number:
OE0000223
Resource Relation:
Patent File Date: 2013 Apr 14
Research Org:
Seeo, Inc., Hayward, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE
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Works referenced in this record:

Performance limitations of polymer electrolytes based on ethylene oxide polymers
journal, August 2000
Morphology of PI–PEO block copolymers for lithium batteries
journal, August 2006

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