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Title: Solid polymer electrolyte and method of preparation

Abstract

Disclosed is an improved solid electrolyte made of an interpenetrating network type solid polymer comprised of two compatible phases: a crosslinked polymer for mechanical strength and chemical stability, and an ionic conducting phase. The highly branched siloxane polymer of the present invention has one or more poly(ethylene oxide) (“PEO”) groups as a side chain. The PEO group is directly grafted to silicon atoms in the siloxane polymer. This kind of branched type siloxane polymer is stably anchored in the network structure and provides continuous conducting paths in all directions throughout the IPN solid polymer electrolyte. Also disclosed is a method of making an electrochemical cell incorporating the electrolyte. A cell made accordingly has an extremely high cycle life and electrochemical stability.

Inventors:
; ;
Issue Date:
Research Org.:
Quallion LLC, Sylmar, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531532
Patent Number(s):
7226702
Application Number:
10/496,230
Assignee:
Quallion LLC (Sylmar, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 2003-01-22
Country of Publication:
United States
Language:
English

Citation Formats

Oh, Bookeun, Amine, Khalil, and Vissers, Donald R. Solid polymer electrolyte and method of preparation. United States: N. p., 2007. Web.
Oh, Bookeun, Amine, Khalil, & Vissers, Donald R. Solid polymer electrolyte and method of preparation. United States.
Oh, Bookeun, Amine, Khalil, and Vissers, Donald R. Tue . "Solid polymer electrolyte and method of preparation". United States. https://www.osti.gov/servlets/purl/1531532.
@article{osti_1531532,
title = {Solid polymer electrolyte and method of preparation},
author = {Oh, Bookeun and Amine, Khalil and Vissers, Donald R.},
abstractNote = {Disclosed is an improved solid electrolyte made of an interpenetrating network type solid polymer comprised of two compatible phases: a crosslinked polymer for mechanical strength and chemical stability, and an ionic conducting phase. The highly branched siloxane polymer of the present invention has one or more poly(ethylene oxide) (“PEO”) groups as a side chain. The PEO group is directly grafted to silicon atoms in the siloxane polymer. This kind of branched type siloxane polymer is stably anchored in the network structure and provides continuous conducting paths in all directions throughout the IPN solid polymer electrolyte. Also disclosed is a method of making an electrochemical cell incorporating the electrolyte. A cell made accordingly has an extremely high cycle life and electrochemical stability.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {6}
}

Patent:

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