锂离子电池作为能源存储的核心部件,其一旦发生热失控且造成传播,将可能造成严重的火灾和爆炸事故。因此,在电池本征安全问题尚未根本解决时,研究其热失控传播机制与阻隔材料至关重要。概述了锂离子电池热失控的机理,包括诱因、内部化学反应和定量分析。从实验和数值模拟研究两方面入手,阐述了热失控的传播机制。基于以上理论基础,系统梳理了热失控传播阻隔材料的研究进展,并展望了其未来研究重点。
As the core component of energy storage,lithium-ion batteries may cause serious fire and explosion accidents once thermal runaway occurs and spreads.Therefore,it is crucial to study the thermal runaway propagation mechanism and barrier materials of batteries while the intrinsic safety issues of batteries have not been fundamentally solved.This article outlined the mechanism of thermal runaway of lithium-ion batteries,including triggers,internal chemical reactions and quantitative analysis.Starting from experimental and numerical simulation studies,the propagation mechanism of thermal runaway was elucidated.Based on the theoretical foundation,the research progress of thermal runaway propagation barrier materials was systematically reviewed,and the future research focus was prospected.
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基金资助
国家自然科学基金(52106284);河北省省级科技计划资助(22375418D)
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