The Impact of Temperature on the Performance and Reliability of Li/SOCl 2 Batteries

Yongquan Sun (), Xinkun Qin, Lin Li, Youmei Zhang, Jiahai Zhang and Jia Qi
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Yongquan Sun: School of Measurement and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China
Xinkun Qin: School of Measurement and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China
Lin Li: School of Measurement and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China
Youmei Zhang: School of Measurement and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China
Jiahai Zhang: Yantai Dongfang Wisdom Electric Co., Ltd., Yantai 264000, China
Jia Qi: School of Measurement and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China

Energies, 2024, vol. 17, issue 13, 1-14

Abstract: The performance and reliability of lithium thionyl chloride (Li/SOCl 2 ) batteries are significantly affected by temperature, but the reliability level and failure mechanisms of Li/SOCl 2 batteries remain unclear. In this study, Weibull distribution statistics were used to infer the life expectancy of Li/SOCl 2 batteries at different temperatures. Additionally, the battery failure mechanism was analyzed using electrochemical impedance spectroscopy (EIS). It is found that under the discharge condition of 7.5 kΩ load, the mean time between failures (MTBF) and reliable life of the battery decreased with increasing operating temperature. Under the discharge condition of 750 Ω load, the MTBF of the battery peaked at 60 °C. Furthermore, the influence of temperature on the voltage output characteristics of Li/SOCl 2 batteries and the voltage hysteresis were analyzed. Both the battery output voltage and the hysteresis effect increased with rising temperature. This is because high temperature accelerates internal battery reactions, thus altering the formation process of the passivation film on the lithium metal negative electrode.

Keywords: Li/SOCl 2 battery; battery life; voltage hysteresis; failure mechanism (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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