Title: Nonaqueous liquid electrolyte

Abstract

Disclosed is a nonaqueous and nonvolatile liquid type polymeric electrolyte comprising poly(siloxane-g-ethylene oxide). This electrolyte provides significant safety and stability. The present invention solves the problems of volatility, flammability and chemical reactivity of lithium ion type electrolytes. The disclosed electrolyte exhibits excellent stability, conductivity and low impedance characteristics. The electrolyte comprises a new class of structural siloxane polymers with one or more poly(ethylene oxide) side chains. The inorganic siloxanes comprising the main backbone of the copolymers are thermally very stable and resistant to decomposition by heat. Because the main chain of the disclosed class of electrolytes is an Si--O linkage, initiation of the combustion cycle is inhibited or prevented.

Inventors:

Oh, Bookeun; Amine, Khalil; Hyung, Yooeup Eup; Vissers, Donald R.; Tsukamoto, Hisashi

Issue Date:

2009-03-03

Research Org.:

U. S. Dept. of Energy, Washington, D.C. (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1531580

Patent Number(s):

7498102

Application Number:

10/167,940

Assignee:

Oh, Bookeun, Lisle, IL (United States)

Patent Classifications (CPCs):

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES

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C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

C08L83/12 - containing polyether sequences

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES

H01B1/122 - {Ionic conductors}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01G - CAPACITORS

H01G9/022 - Electrolytes, absorbents

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M10/0431 - {Cells with wound or folded electrodes
H01M10/052 - Li-accumulators
H01M10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes
H01M10/0565 - Polymeric materials, e.g. gel-type or solid-type
H01M10/0585 - of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
H01M10/0587 - of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
H01M10/38 - Construction or manufacture
H01M2300/0025 - Organic electrolyte
H01M2300/0082 - Organic polymers
H01M6/181 - {with polymeric electrolytes

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/10 - Energy storage

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P70/50 - Manufacturing or production processes characterised by the final manufactured product

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

Y02T10/70 - Energy storage for electromobility

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DOE Contract Number:  

W-31-109-ENG-38

Resource Type:

Patent

Resource Relation:

Patent File Date: 2002-06-12

Country of Publication:

United States

Language:

English