船电技术|综述Vol.43No.062023.0620锂离子电池失效机理研究刘钊慧1，张一晗1,2，李祯1,2，张海兵1,2，马力1,2，段体岗1,2（中国船舶集团有限公司第七二五研究所，河南洛阳471023；2.中国船舶集团有限公司第七二五研究所海洋腐蚀与防护重点实验室，山东青岛266237）摘要：本文主要介绍了常见固态锂离子电池中的由锂枝晶引起的内部短路和发热机理，及其模拟建立的相应的内部微型短路串联电池结构型的锂离子电池短路模型。分析表明，除传统的锂枝晶生长原理外，在固态锂离子在电池中，即使具有一定剪切模量固态电解质的可在某种程度上抑制枝晶生长，但固态电解质中存在的缺陷和晶界仍为锂枝晶的生长提供了空间，对电池内部产生一定损伤。因此，探明锂离子电池的失效机理是解决新型电力存储设备寿命问题的关键，对船舶领域能源革新具有显著的生产科研价值。关键词：锂离子电池锂枝晶生长内部短路电解质中图分类号：TM911文献标识码：A文章编号：1003-4862（2023）06-0020-06StudyonthefailuremechanismofthelithiumionbatteryLiuZhaohui1,ZhangYihan1,2,LiZhen1,2,ZhangHaibing1,2,MaLi1,2,DuanTigang1,2(1.LuoyangShipMaterialResearchInstitute,Luoyang471023,China;2.StateKeyLaboratoryforMarineCorrosionandProtection,LuoyangShipMaterialResearchInstitute,Qingdao266237,China)Abstract:Inthispaper,theinternalshortcircuitandheatingmechanismcausedbylithiumdendriteincommonsolid-statelithiumionbatteriesarereviewed,andthecorrespondingshortcircuitmodeloflithiumionbatterieswithinternalminiatureshortcircuitseriesbatterystructureisestablishedbysimulation.Theresearchresultsshowthat,inadditiontothetraditionallithiumdendritegrowthprinciple,inthesolidlithiumionbattery,evenifthesolidelectrolytewithacertainshearmoduluscaninhibitthedendritegrowthtosomeextent,thedefectsandgrainboundariesinthesolidelectrolytestillprovidespaceforthelithiumdendritegrowthandcausesomedamagetothebatteryinterior.Therefore,findingoutthefailuremechanismoflithium-ionbatteryisthekeytosolvethelifeproblemofnewelectricpowerstorageequipment,whichhassignificantproductionandscientificresearchvalueforenergyinnovationinthefieldofshipbuilding.Keywords:lithiumionbattery;lithiumdendritegrowth;internalshortcircuit;...
