Abstract
Lithium battery cells typically have a sealed structure. Throughout the life cycle of such batteries, electric/chemical/force/thermal multi-field coupling interactions occur during the service process. Therefore, in situ characterization of the internal mechanics and temperature parameters of batteries is vital for managing their safety. In this study, a lithium-ion battery pressure/temperature monitoring micro thin-film sensor based on a flexible printed circuit anode current collector is formed by using a piezoelectric/pyroelectric poly (vinylidene fluoride-trifluoroethylene) material. The micro thin-film sensor is integrated within the battery and can monitor the mechanical and thermal damage inside the battery in real-time without interfering with the battery operation. The micro thin-film sensor prepared following this method provides sufficient early warning of battery failure and can significantly improve battery safety performance.
| Original language | English |
|---|---|
| Article number | 113484 |
| Number of pages | 9 |
| Journal | Sensors and Actuators A: Physical |
| Volume | 338 |
| Early online date | 2 Mar 2022 |
| DOIs | |
| Publication status | Published - 1 May 2022 |
| Externally published | Yes |
Bibliographical note
This work was supported by Sichuan Province Science and Technology Support Program, China (Contract no. 2018JY0554, Contract no. 2069998).Keywords
- Battery pressure/temperature monitoring
- Flexible printed circuit current collector
- Poly (vinylidene fluoride-trifluoroethylene)
- Real-time monitoring
