工学部 研究紹介_2018_英語版

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Shimizu LabNext-generationenergystoragedevicesthatuseNa-ionorMg-ionasthechargecarrier,Na-ionbattery(NIB)andMg-ionbattery(MIB),haveattractedmoreandmoreattentionbecauseofthoselowcostandnaturalabundance.Inordertorealizethebatterieswithahighenergydensity,ourresearchgroupfocusesondevelopmentofcarbon-andalloy-basedhostmaterialswhichcanabsorbmuchchargecarrierperthoseformulaweightandsuitableelectrolytesolutionsincollaborationwithProf.Araigroup.Rechargeablebatteriesareindispensableinadailylifeinthepresent.Toeffectivelyuserenewableenergy,“storageofenergy”issignificantlyimportant,andbatterieswithhighcapacityandlong-lifetimearerewired.Ourgroupattemptstodevelophigh-performanceelectrodematerialsandsuitableelectrolytesolutionsforNa-,Mg-ionbatterieswhichleadtotherealizationofalow-carbonsociety.MasahiroShimizuAssistantProfessorHereceivedhisDr.degreefromTottoriUniversityin2016.Hisresearchfocusesondevelopmentofelectrodematerialsforrechargeablebatteries(NIBandMIB).Developmentofelectrodematerialsfornext-generationrechargeablebatteries(right)TEMimageofSiliconoxideparticles(activematerial)preparedbyasol-gelmethod.(left)Studentinourgroupfabricatescoin-typecellwithinagloveboxfilledwithanargonatmospherefromwhichtheoxygenandwaterhadbeencompletelyremoved.Variousanalyticalinstruments(TEM,FIB,FE-SEMetc.)arerequiredformaterialcharacterization,andtheexperienceindealingwiththemwillbeabigadvantageaftergraduation.Throughthestudiesofelectroplatingandelectrodematerials,wedeveloppeoplewithoutstandingspecialistcapabilitieswhocanplayintheinternationalarena.In the FutureAfter GraduationDiameter: 200300 nm30nmBatteryconstituentmaterials.Ingeneral,batteryisconsistedofactivematerials,binder,conductiveadditive,currentcollector,andelectrolytesolution.ArCreating Inorganic Materials: Ceramic materials chemistryYamaguchiLabVariousceramic,inorganicmaterialsareusedaroundus.TheYamaguchiLaboratoryisconductingresearchonthesynthesisandapplicationofvariousinorganicmaterialsincludingmicaandalumina.Atpresent,weareundertakingresearchonthesynthesisofnovelmicacrystalsandthecompositeshavingmicroporesintheinterlayerregionofmicacrystals.Wearealsoworkingontheprocessofaluminaceramicsusinganewsol-gelmethodwithaninorganicsaltsolution.Micasandaluminashavebeenstudiedandusedformanyyears,butresearcherstodayarefindingmethodsofsynthesizingmaterialswithnewcompositionsandalsofindingnewphenomena.Inourlaboratory,studentsintheirsenioryearandgraduatestudentsareconductingtheexperimentsfortheirindividualresearchthemes.TomohiroYamaguchiAssociateProfessorFields of research: Ceramics, Inorganic Materials Chemistry, Clay Science, etc.Swellablemica crystals having a hexagonal plate-like morphology synthesized by using NaClas a flux.Alumina gels containing a small amount of organic additive lead to the formation of fine alpha-alumina particles at lower temperatures.Manygraduatesfromourlaboratoryareworkingincompaniesrelatedtoceramicsandglassaswellasvariouschemicalmaterials.Theyarealsoactiveinvariousotherfields.In the FutureAfter GraduationMaterialsChemistryMaterialsChemistry16