P1-1451Cathode-Electrolyte Reactivity Driving Magnesium Battery Full-Cell Degradation at Elevated TemperatureKey Words: Magnesium Batteries, Electrolyte, Cathode, Full-Cell Rechargeablemagnesiumbatteries(RMBs)offerlowcostandhightheoreticalcapacityduetotheuseofmagnesiummetalanode,makingthempromisingalternativestolithium-ionbatteries(LIBs).However,interfacialissuesattheMganodeandhigh-voltagecathodeshinderenergydensityandstability.Therefore,moststudiesremainlimitedtohalf-cellevaluations,withoutproperassessmentonfull-cell.⚫RMBsfull-cellhasbeenassessedusingVO2cathodeandMganodewithMg[Al(hfip)4]2-basedelectrolyte.⚫Severedegradationwasobservedatelevatedtemperature(60⁰C)drivenbyinterfacialreactivitybetweenthecathodeandtheelectrolytematerial.ConclusionRMBs Half-Cell vs. Full-CellDegradation Mechanism Analysis⚫Electrolyte materials with good interfacial stability at high-voltage should be developed.⚫Cathode materials capable of hosting Mg2+ion at room temperature with high-energy density should be investigated systematically. Future PlanIntroductionThisstudybridgesthegapbetweenhalf-cellandfull-cellelectrodecharacterizationinRMBs.WeelucidatethemechanismbehindRMBsfullcelldegradationatelevatedtemperature,despitestableoperationofbothMgmetalanodeandVO2cathodeinhalf-cell.Theunderlyingfactorsbehindsuchdegradationissystematicallyinvestigatedthroughelectrochemicalandinterfacialanalysis.Theme underDiscussionFunctional Electrolyte Synthesis Team, GREEN Dedy Setiawan, Toshihiko MandaiE-mail：： SETIAWAN.Dedy@nims.go.jp, MANDAI.Toshihiko@nims.go.jp◼Electrolyte structure and Mg plating/stripping performance◼Cathode material structure and half-cell performance◼RMBs full-cell performanceReproduced from Setiawan, D., et. al. Adv. Sci. 2025, e11416Mg[Al(hfip)4]2in ether as benchmarking electrolyteReproduced from Setiawan, D., et. al. ChemSusChem 2023, 16, e202300758VO2as a model cathode due to its structure capable to host Mg2+ions and reasonable cycle performance◼Mg metal interfacial analysis◼Three-electrodes cell◼Degradation mechanismReproduced from Setiawan, D., et. al. Adv. Sci. 2025, e11416Reproduced from Setiawan, D., et. al. Adv. Sci. 2025, e11416
元のページ ../index.html#51