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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 Lab. (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):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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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Works referenced in this record:

Characteristics of new-type solid polymer electrolyte controlling nano-structure
journal, August 2005


Phase Behavior of Lithium Perchlorate-Doped Poly(styrene- b -isoprene- b -ethylene oxide) Triblock Copolymers
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Rubbery Block Copolymer Electrolytes for Solid-State Rechargeable Lithium Batteries
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Effect of Molecular Weight on the Mechanical and Electrical Properties of Block Copolymer Electrolytes
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Block copolymers of poly(ethylene oxide) materials for polymer electrolytes (transport properties)
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All Solid-State Lithium-Polymer Battery Using a Self-Cross-Linking Polymer Electrolyte
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