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Title: High elastic modulus polymer electrolytes suitable for preventing thermal runaway in lithium batteries

Abstract

A polymer that combines high ionic conductivity with the structural properties required for Li electrode stability is useful as a solid phase electrolyte for high energy density, high cycle life batteries that do not suffer from failures due to side reactions and dendrite growth on the Li electrodes, and other potential applications. The polymer electrolyte includes a linear block copolymer having a conductive linear polymer block with a molecular weight of at least 5000 Daltons, a structural linear polymer block with an elastic modulus in excess of 1.times.10.sup.7 Pa and an ionic conductivity of at least 1.times.10.sup.-5 Scm.sup.-1. The electrolyte is made under dry conditions to achieve the noted characteristics. In another aspect, the electrolyte exhibits a conductivity drop when the temperature of electrolyte increases over a threshold temperature, thereby providing a shutoff mechanism for preventing thermal runaway in lithium battery cells.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1129388
Patent Number(s):
8703310
Application Number:
13/664,345
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Oct 30
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Mullin, Scott, Panday, Ashoutosh, Balsara, Nitash Pervez, Singh, Mohit, Eitouni, Hany Basam, and Gomez, Enrique Daniel. High elastic modulus polymer electrolytes suitable for preventing thermal runaway in lithium batteries. United States: N. p., 2014. Web.
Mullin, Scott, Panday, Ashoutosh, Balsara, Nitash Pervez, Singh, Mohit, Eitouni, Hany Basam, & Gomez, Enrique Daniel. High elastic modulus polymer electrolytes suitable for preventing thermal runaway in lithium batteries. United States.
Mullin, Scott, Panday, Ashoutosh, Balsara, Nitash Pervez, Singh, Mohit, Eitouni, Hany Basam, and Gomez, Enrique Daniel. Tue . "High elastic modulus polymer electrolytes suitable for preventing thermal runaway in lithium batteries". United States. https://www.osti.gov/servlets/purl/1129388.
@article{osti_1129388,
title = {High elastic modulus polymer electrolytes suitable for preventing thermal runaway in lithium batteries},
author = {Mullin, Scott and Panday, Ashoutosh and Balsara, Nitash Pervez and Singh, Mohit and Eitouni, Hany Basam and Gomez, Enrique Daniel},
abstractNote = {A polymer that combines high ionic conductivity with the structural properties required for Li electrode stability is useful as a solid phase electrolyte for high energy density, high cycle life batteries that do not suffer from failures due to side reactions and dendrite growth on the Li electrodes, and other potential applications. The polymer electrolyte includes a linear block copolymer having a conductive linear polymer block with a molecular weight of at least 5000 Daltons, a structural linear polymer block with an elastic modulus in excess of 1.times.10.sup.7 Pa and an ionic conductivity of at least 1.times.10.sup.-5 Scm.sup.-1. The electrolyte is made under dry conditions to achieve the noted characteristics. In another aspect, the electrolyte exhibits a conductivity drop when the temperature of electrolyte increases over a threshold temperature, thereby providing a shutoff mechanism for preventing thermal runaway in lithium battery cells.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {4}
}

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