In situ monitoring of temperature using flexible micro temperature sensors inside polymer lithium-ion battery

Polymer lithium-ion batteries must rapidly charge and discharge, rapidly increasing their inner temperature. This heating raises a safety issue. Therefore, a flexible micro temperature sensor for the in-situ monitoring of temperature within a polymer lithium-ion battery must be developed. Traditional thermocouples are too large to be used to measure temperature inside polymer lithium-ion batteries. In this study, a novel method for the in situ monitoring of temperature inside a polymer lithium-ion battery involves flexible micro temperature sensors. Temperature is successfully measured in situ using flexible micro temperature sensor.