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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...
Thermal self‐protected intelligent electrochemical storage devices are fabricated using a reversible sol–gel transition of the electrolyte, which can decrease the specific capacitance and increase and enable temperature‐dependent charging and discharging rates in the device. This work represents proof of a simple and useful concept, which shows tremendous promise for the safe and controlled power...
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