Thermal-Responsive Polymers for Enhancing Safety of Electrochemical Storage Devices.
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Abstract |
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Thermal runway constitutes the most pressing safety issue in lithium-ion batteries and supercapacitors of large-scale and high-power density due to risks of fire or explosion. However, traditional strategies for averting thermal runaway do not enable the charging-discharging rate to change according to temperature or the original performance to resume when the device is cooled to room temperature. To efficiently control thermal runaway, thermal-responsive polymers provide a feasible and reversible strategy due to their ability to sense and subsequently act according to a predetermined sequence when triggered by heat. Herein, recent research progress on the use of thermal-responsive polymers to enhance the thermal safety of electrochemical storage devices is reviewed. First, a brief discussion is provided on the methods of preventing thermal runaway in electrochemical storage devices. Subsequently, a short review is provided on the different types of thermal-responsive polymers that can efficiently avoid thermal runaway, such as phase change polymers, polymers with sol-gel transitions, and polymers with positive temperature coefficients. The results represent the important development of thermal-responsive polymers toward the prevention of thermal runaway in next-generation smart electrochemical storage devices. |
Year of Publication |
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2018
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Journal |
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Advanced materials (Deerfield Beach, Fla.)
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Date Published |
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2018
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ISSN Number |
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0935-9648
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URL |
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http://dx.doi.org/10.1002/adma.201704347
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DOI |
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10.1002/adma.201704347
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Short Title |
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Adv Mater
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