Thermally induced deactivation of lithium-ion batteries using temperature-responsive interfaces

Thermal runaway is a major issue facing widespread adaptation of lithium-ion batteries. To achieve safe, thermally stable energy storage, various approaches have been proposed to regulate exothermic electrochemical reactions at high temperature, yet these have could only be either applied in aqueous...

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Bibliographic Details
Published in:Ionics 2019-05, Vol.25 (5), p.2453-2457
Main Authors: Jiang, Han, Emmett, Robert K., Roberts, Mark E.
Format: Article
Language:English
Subjects:
Anhydrides
Chemical reactions
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Deactivation
Electrochemistry
Electrolytic cells
Energy Storage
Exothermic reactions
High temperature
Ion migration
Lithium
Lithium-ion batteries
Maleic anhydride
Optical and Electronic Materials
Organic chemistry
Phase transitions
Rechargeable batteries
Renewable and Green Energy
Short Communication
Solvents
Storage batteries
Thermal runaway
Thermal stability
Thin films
Voltage drop
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Summary:Thermal runaway is a major issue facing widespread adaptation of lithium-ion batteries. To achieve safe, thermally stable energy storage, various approaches have been proposed to regulate exothermic electrochemical reactions at high temperature, yet these have could only be either applied in aqueous systems or impractical in large-format cells. In this communication, we demonstrate that a copolymer, poly(2-chloroethyl vinyl ether-alt-maleic anhydride), or poly(CVE-MA), which exhibits a temperature-activated phase transition in organic solvents at high temperature, can be utilized as a thin film to inhibit lithium-ion migration/intercalation chemistries at the electrode/electrolyte interface. A large voltage drop and capacity decrease were observed at 80 °C due to interfacial hindrances imposed by the phase transition and resultant precipitation of poly(CVE-MA). This development of responsive polymers in organic solvents holds great potential for the future thermal safety of lithium-ion batteries.
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-019-02936-3