新型炭材料（中英文）2026，Vol.41Issue(4)：905-916,12.DOI:10.1016/S1872-5805(26)61104-3
氟化程度调控Ah级锂/氟化碳软包电池的产热行为
Fluorination regulates heat generation in Ah-level lithium/fluorinated carbon pouch cells
摘要
Abstract
Lithium/fluorinated carbon(Li/CFx)batteries are among the most promising high-energy-density primary bat-teries.However,substantial heat generation during discharge remains a safety concern,particularly for high-mass-loaded pouch cells.Fluorinated porous carbon(FPC)samples with different degrees of fluorination were obtained by changing the fluorination temperature,and their effects on heat genera-tion in Ah-level Li/FPC pouch cells were examined.The flu-orination temperature not only influences the F/C ratio,but also the C-F bonding configuration,and physicochemical properties of the FPC.Pouch cells using the more highly fluorinated cathodes generated the most heat during discharge.The heat generated also has a clear stage dependence,with the largest difference appearing in the 0-20%depth of discharge range.Post-discharge structural characterization and kinetic analysis showed that the highly fluorinated FPC cathodes have more LiF accumulation concentrated in certain regions,together with a higher charge-transfer resistance,stronger polarization,lower Li+diffusivity,and a higher nucleation overpotential.These factors collectively intensify the early-stage heat generation in the cells.This study shows that the fluorinated cathode structure,LiF evolution,and discharge kinetics jointly govern heat genera-tion in Li/FPC pouch cells,possibly providing a way to improve their thermal safety.关键词
氟化多孔碳正极/氟化温度/软包电池/产热行为/热安全性Key words
Fluorinated porous carbon cathodes/Fluorination temperature/Pouch cells/Heat-generation behavior/Thermal safety分类
通用工业技术引用本文复制引用
夏希贤,李瑀,孙立东,彭聪,孔令辰,王勇,封伟..氟化程度调控Ah级锂/氟化碳软包电池的产热行为[J].新型炭材料（中英文）,2026,41(4):905-916,12.基金项目
This work was financially supported by the Na-tional Key R&D Program of China(2023YFC2411901),the National Natural Science Foundation of China(52503078,52502289)and the Guangdong Basic and Applied Basic Research Found-ation(2025A1515012080). 国家重点研发计划(2023YFC2411901) （2023YFC2411901）
国家自然科学基金(52503078,52502289) （52503078,52502289）
广东省基础与应用基础研究基金(2025A1515012080) （2025A1515012080）
