Li-Si合金中间相作为锂离子电池负极材料的研究(英文)

Li-Si合金中间相作为锂离子电池负极材料的研究(英文)Research on Intermediate Phases in Li-Si Alloys as Negative Electrode Ma

Li-Si( 合金中间相作为锂离子电池负极材料的研究英 ) 文 ResearchonIntermediatePhasesinLi-SiAlloysasNegative ElectrodeMaterialsforLithium-ionBatteries Abstract: Asdemandsformoreefficientandenvironmentallyfriendly energystoragedevicescontinuetoincrease,lithium-ionbatteries havebecomeapopularchoice.Thecompositionofthenegative electrodedeterminesthebattery'sperformanceandstability.In thispaper,wediscusstheuseofLi-Sialloysandtheroleof intermediatephasesinenhancingbatteryperformance.Thepaper reviewsthesynthesismethods,characterizationtechniques,and propertiesofintermediatephasesthathavebeenstudiedsofar. Furthermore,wediscussthefuturepotentialsandchallengesof Li-Sialloysasnegativeelectrodematerialsforlithium-ion batteries. Introduction: Lithium-ionbatteriesarewidelyusedinelectronicgadgets, electricvehicles,andgridstoragesystems.Thenegativeelectrode, whichtypicallyconsistsofgraphiteorsilicon-basedmaterials, playsacrucialroleinthebattery'sperformance.Silicon-based anodeshaveshownpromisetoreplacegraphiteanodesdueto theirhigherenergydensity.However,silicon-basedanodesare pronetovolumeexpansionandcontractionduringthecharging anddischargingprocess,leadingtothefailureoftheelectrode anddeterioratingbatterylifespan. Li-Sialloyshavebecomeanalternativesolutiontoovercome theissuesassociatedwithsiliconanodes.Li-Sialloyspossess bettercyclingstabilityandhigherenergydensitythansilicon anodes.TheLi-Sialloy'sperformanceheavilyreliesonthe formationandpropertiesofintermediatephasesthatare generatedduringtheelectrochemicalreaction. Synthesismethods: Li-Sialloyscanbesynthesizedbyvariousmethods,suchas solid-statereaction,mechanicalalloying,andelectrochemical