Lithium-ion batteries(LIBs)are pivotal in modern energy storage systems,yet their safety and longevity are critically threatened by several abuses.The over-discharge is overlooked in extreme operational conditions.Ove...Lithium-ion batteries(LIBs)are pivotal in modern energy storage systems,yet their safety and longevity are critically threatened by several abuses.The over-discharge is overlooked in extreme operational conditions.Over-discharge in LIBs poses significant threats to performance and safety,inducing irreversible structural and electrochemical degradation.Key mechanisms include solid electrolyte interphase(SEI)layer breakdown,copper dissolution,and dendrite-induced internal short circuits,which accelerate capacity fade and thermal runaway risks.This review systematically analyzes these degradation pathways and evaluates mitigation strategies,such as voltage cutoff circuits,advanced battery management systems(BMS),and innovative protection strategies at the material level,like prelithiation and artificial SEI layers.The work also identifies gaps in current research,advocating for improved predictive models and industrial-scale solutions to address over-discharge challenges in next-generation energy storage systems.展开更多
基金supported by the National Natural Science Foundation of China(Nos.U21A20170 and 22279070)National Key Research and Development Program of China(Nos.2021YFB2501900 and 2019YFA0705703)+3 种基金Beijing Natural Science Foundation(No.L242005)Engineering Research Center of Alternative Energy Materials&Devices,Ministry of Education(No.AEMDKF202502)the Key Laboratory of Green Extraction&Efficient Utilization of Light Rare-Earth Resources,Ministry of Education(No.KLRE-KF-005)Key Laboratory of Ionic Rare Earth Resources and Environment,Ministry of Natural Resources of the People’s Republic of China(No.2024IRERE301).
文摘Lithium-ion batteries(LIBs)are pivotal in modern energy storage systems,yet their safety and longevity are critically threatened by several abuses.The over-discharge is overlooked in extreme operational conditions.Over-discharge in LIBs poses significant threats to performance and safety,inducing irreversible structural and electrochemical degradation.Key mechanisms include solid electrolyte interphase(SEI)layer breakdown,copper dissolution,and dendrite-induced internal short circuits,which accelerate capacity fade and thermal runaway risks.This review systematically analyzes these degradation pathways and evaluates mitigation strategies,such as voltage cutoff circuits,advanced battery management systems(BMS),and innovative protection strategies at the material level,like prelithiation and artificial SEI layers.The work also identifies gaps in current research,advocating for improved predictive models and industrial-scale solutions to address over-discharge challenges in next-generation energy storage systems.
