储能科学与技术2025，Vol.14Issue(4)：1352-1361,10.DOI:10.19799/j.cnki.2095-4239.2024.0919
储能用锂离子电池老化过程监测:双层GeTe热电传感器
Monitoring the aging process of energy storage lithium-ion batteries:Bilayer GeTe thermoelectric sensors
摘要
Abstract
The detection and safety early warning method for lithium-ion battery aging employs double-layer GeTe thermoelectric materials.This method capitalizes on the relationship between the temperature differential(ΔT)across the thermoelectric material and the induced thermoelectric signal to accurately identify"irreversible reactions"at the microscopic level within the battery.During the early stages of thermal runaway,the thermoelectric sensor's response current can surge to 183.7 μA/μm,approximately an order of magnitude higher than standard operating conditions.This significantly reduces the risk of abnormal aging and thermal runaway in lithium-ion battery energy storage systems.The study also evaluated how external stress affects the sensitivity and reliability of these double-layer GeTe thermoelectric devices.Findings have revealed that their response signals are highly sensitive to ΔT and temperature variations.Specifically,before the battery's temperature differential surpasses 60 K,the sensor's thermoelectric response ratio increases by over 1.2 times for every 10 K increment in the temperature gradient.Moreover,even under curling strain,the strength of the thermal runaway early warning signal remains over five times stronger than during normal operating conditions,highlighting the devices'robust stress stability.The findings suggest that double-layer GeTe thermoelectric materials possess excellent thermoelectric sensing capabilities,sensitivity,and stability.These qualities make them a promising solution for monitoring the aging process and enabling early detection of thermal runaway incidents in the energy storage of lithium-ion batteries.关键词
储能电池/早期预警/双层GeTe/智能传感Key words
energy storage battery/early warning/double-layer GeTe/intelligent sensing分类
信息技术与安全科学引用本文复制引用
李博文,赵光金,李雅敏,杨宵,张云潇,董锐锋,胡玉霞..储能用锂离子电池老化过程监测:双层GeTe热电传感器[J].储能科学与技术,2025,14(4):1352-1361,10.基金项目
国家重点研发计划项目(2021YFB2401805),河南科技智库调研课题(HNKJZK-2025-43B). （2021YFB2401805）
