Safety behaviors and degradation mechanisms of aged batteries: A review  

作　　者：Shuguo Sun Jun Xu 

机构地区：[1]Department of Mechanical Engineering,University of Delaware,Newark,DE 19716,USA [2]Energy Mechanics and Sustainability Laboratory(EMSLab),University of Delaware,Newark,DE 19716,USA

出　　处：《Energy Materials and Devices》2024年第4期2-28,共27页能源材料与器件(英文)

基　　金：support from the research project from FM and startup funds provided by the University of Delaware.

摘　　要：As lithium-ion batteries(LIBs)become increasingly widespread,ensuring their safety has become a primary concern.Particularly,battery aging has been reported to significantly impact major battery safety behaviors,including the internal short circuit(ISC)and thermal runaway(TR).Over the past decade,despite consider-able research into the thermal hazards of aged batteries,the complexity of battery aging and TR mecha-nisms,along with the challenges posed by extreme experimental conditions,necessitates a systematic under-standing.Aiming to provide a comprehensive review of safety issues related to aged batteries,this paper begins by exploring the fundamental aging mechanisms and factors that accelerate aging.It then investi-gates how aging affects battery safety issues,including swelling and off-gassing behaviors.Furthermore,we discuss the impact of aging on TR problems induced by abusive conditions,covering safety issues from inter-nal sources to external abusive scenarios.This review offers valuable insights into understanding and predict-ing the thermal hazards of aged LIBs,which provides guidelines for designing and manufacturing safer LIBs and accurate and rapid battery safety prognostics in the future.

关 键 词：battery safety battery aging internal short circuit thermal runaway MODELING CHARACTERIZATION 

分 类 号：TM9[电气工程—电力电子与电力传动]