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Solid electrolyte material manufacturable by polymer processing methods

Patent ·
OSTI ID:1078289
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The present invention relates generally to electrolyte materials. According to an embodiment, the present invention provides for a solid polymer electrolyte material that is ionically conductive, mechanically robust, and can be formed into desirable shapes using conventional polymer processing methods. An exemplary polymer electrolyte material has an elastic modulus in excess of 1.times.10.sup.6 Pa at 90 degrees C. and is characterized by an ionic conductivity of at least 1.times.10.sup.-5 Scm-1 at 90 degrees C. An exemplary material can be characterized by a two domain or three domain material system. An exemplary material can include material components made of diblock polymers or triblock polymers. Many uses are contemplated for the solid polymer electrolyte materials. For example, the present invention can be applied to improve Li-based batteries by means of enabling higher energy density, better thermal and environmental stability, lower rates of self-discharge, enhanced safety, lower manufacturing costs, and novel form factors.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-05CH11231
Assignee:
Seeo, Inc. (Hayward, CA)
Patent Number(s):
8,268,197
OSTI ID:
1078289
Country of Publication:
United States
Language:
English

References (6)

ABA triblock comb copolymers with oligo(oxyethylene) side chains as matrix for ion transport journal May 1989
Characteristics of new-type solid polymer electrolyte controlling nano-structure journal August 2005
Effect of Molecular Weight on the Mechanical and Electrical Properties of Block Copolymer Electrolytes journal June 2007
Phase Behavior of Lithium Perchlorate-Doped Poly(styrene- b -isoprene- b -ethylene oxide) Triblock Copolymers journal April 2002
Block copolymers of poly(ethylene oxide) materials for polymer electrolytes (transport properties) journal April 1993
Rubbery Block Copolymer Electrolytes for Solid-State Rechargeable Lithium Batteries journal January 1999

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36 MATERIALS SCIENCE