Rapid Thermal Shutdown of Deep‐Eutectic‐Polymer Electrolyte for Lithium Metal Batteries
Author Information
Author(s): Zhang Zengqi, Li Gang, Du Xiaofan, Huang Lang, Kang Guohong, Zhang Jianjun, Cui Zili, Liu Tao, Ni Ling, Jin Yongcheng, Cui Guanglei
Primary Institution: Ocean University of China
Hypothesis
Can a deep-eutectic-polymer electrolyte with thermal shutdown capability improve the safety of lithium metal batteries?
Conclusion
The deep-eutectic-polymer electrolyte significantly enhances the thermal safety and electrochemical performance of lithium metal batteries.
Supporting Evidence
- The new electrolyte improves the self-heating temperature from 73 °C to 172 °C.
- It prolongs the thermal runaway waiting time by more than 20 hours.
- The polymer electrolyte retains 92% capacity over 200 cycles in one battery type.
- Another battery type maintains 90% capacity after 500 cycles.
Takeaway
This study shows that a special type of battery gel can stop working when it gets too hot, which helps prevent fires and explosions.
Methodology
The study involved creating a deep-eutectic-polymer electrolyte and testing its thermal and electrochemical properties in lithium metal batteries.
Limitations
The study does not address long-term stability or performance under various environmental conditions.
Digital Object Identifier (DOI)
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