储能科学与技术2025，Vol.14Issue(4)：1687-1697,11.DOI:10.19799/j.cnki.2095-4239.2024.1047
不同放电倍率下钠离子电池的电性能与产热行为研究
Electrical performance and heat production behavior of sodium-ion batteries at different discharge rate
摘要
Abstract
With the commercial adoption of sodium-ion batteries entering a fast-paced era,attention has shifted to their application in large-scale energy storage systems.Sodium-ion batteries generate heat during charging and discharging owing to a combination of reversible and irreversible electrochemical reactions,especially at high charge and discharge rates.This heat buildup raises battery temperatures,which can accelerate material aging,degrade performance,and even lead to safety concerns such as thermal runaway.This study investigates the electrochemical and thermal behaviors of two types of sodium-ion batteries,namely energy-type and power-type,during their charging and discharging processes.The capacity and energy retention ability of the two types of batteries decreased under high-rate discharge conditions.However,performance degradation was notably less pronounced in power-type batteries compared to energy-type batteries.Furthermore,power-type batteries exhibited a significantly smaller temperature rise and slower temperature increase across various discharge rates.A key observation was that the energy-type battery's temperature exceeded the safe operating limit when discharged at a 1.5 C rate,reaching 51.8℃.The results of this research not only provide a theoretical basis for selecting sodium-ion battery types for specific applications but also contribute valuable data for developing thermal management models.关键词
钠离子电池/电性能/热行为/产热Key words
sodium-ion battery/electrochemical behavior/thermal behavior/heat generation分类
信息技术与安全科学引用本文复制引用
闻有为,滕安琪,李勇琦,田佳敏,丁康杰,段强领,王青松..不同放电倍率下钠离子电池的电性能与产热行为研究[J].储能科学与技术,2025,14(4):1687-1697,11.基金项目
南方电网公司重点科技项目(020000KK52220001,STKJXM20210104). （020000KK52220001,STKJXM20210104）
