Abstract
Temperature rise in Lithium-ion batteries (LIBs) due to solid electrolyte interfaces breakdown, uncontrollable exothermic reactions in electrodes and Joule heating can result in the catastrophic failures such as thermal runaway, which is calling for reliable real-time electrode temperature monitoring. Here, we present a customized LIB setup developed for early detection of electrode temperature rise during simulated thermal runaway tests incorporating a modern additive manufacturing-supported resistance temperature detector (RTD). An advanced RTD is embedded in a 3D printed polymeric substrate and placed behind the electrode current collector of CR2032 coin cells that can sustain harsh electrochemical operational environments (acidic electrolyte without Redox, short-circuiting, leakage etc.) without participating in electrochemical reactions. The internal RTD measured an average 5.8 °C higher temperature inside the cells than the external RTD with almost 10 times faster detection ability, prohibiting thermal runaway events without interfering in the LIBs’ operation. A temperature prediction model is developed to forecast battery surface temperature rise stemming from measured internal and external RTD temperature signatures.
Highlights
Such internal sensor-based electrode temperature measurements have offered superior temperature measurement efficiency and accuracy
Sensor placement on the anode side is being addressed in a separate work
The t90 presents no dependency on target temperature within the assessed temperature range. These results indicate that the resistance temperature detector (RTD) embedded spacer could detect thermal hazards with high efficiency and has limited measuring error over the temperature range covering room temperature to the onset temperature of Lithium-ion batteries (LIBs) thermal runaway[21]
Summary
Such internal sensor-based electrode temperature measurements have offered superior temperature measurement efficiency and accuracy. It has been applied with widely adopted short circuit tests for LIB safety www.nature.com/scientificreports/. During battery thermal hazards such as a thermal runaway phenomena, violent temperature rise leads to cracking of the electrode material[17] and other particle based structures[18], which can impair the contact between the sensor and electrode material. A novel method for incorporating a resistance temperature detector (RTD) behind the cathode current collector of a LIB via additive manufacturing was developed for electrode damage minimization and internal LIB in-operando temperature measurement efficiency improvement. Internal RTD placement yielded significantly superior measuring efficiency and accuracy in comparison to literature reports
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
