物理化学学报ActaPhys.-Chim.Sin.2023,39(3),2209002(1of17)Received:September5,2022;Revised:October18,2022;Accepted:November2,2022;Publishedonline:November9,2022.*Correspondingauthor.Email:zhuchangbao123@gmail.comTheprojectwassupportedbytheNationalNaturalScienceFoundationofChina(22075331,51702376,21905057).国家自然科学基金(22075331,51702376,21905057)资助项目©EditorialofficeofActaPhysico-ChimicaSinica[Review]doi:10.3866/PKU.WHXB202209002www.whxb.pku.edu.cnDesignStrategiesforSodiumElectrodeMaterials:Solid-StateIonicsPerspectiveYanpengFu1,ChangbaoZhu2,*1SchoolofMaterialsandEnergy,GuangdongUniversityofTechnology,Guangzhou510006,China.2SchoolofMaterialsScienceandEngineering,Sun-YatSenUniversity,Guangzhou510275,China.Abstract:Sodium-ionbatteryisoneofthemostpromisingandfeasibleenergystoragecandidates.However,comparedtothelithiumion,thelargerionicradiusandhighermolecularmassofthesodiumionleadtoinferiorelectrochemicalperformanceofsodium-ionbatteries.Therefore,achievingtherationaldesignandconstructionofhigh-performanceelectrodematerialsisakeypointandremainsagreatchallengeforsodium-ionbatteries.Inthiswork,wefocusonthetransportpropertiesofsodiumionsandelectronsanddiscussdesignstrategiesofsodiumelectrodesfromtheperspectiveofsolid-stateionics.First,forthebulksodiumelectrodematerials,investigatingtheirtransportproperties,suchasionicconductivity,electronicconductivity,anddiffusioncoefficient,isaprerequisiteforelectrodedesign.Althoughtherearevariousmethodsofmeasuringthediffusioncoefficient,separatelyachievingtheintrinsicionicandelectronicconductivityofthepurematerialsishighlyimportant.Dopingandcarbon-coatingarethemostusefulapproachestoimprovethespecifictransportpropertiesoftheinvestigatedmaterials.Buildingdefectchemistrymodelsbasedonmeasuredtransportpropertiesandrelevantdefectchemistrytheoryiscrucialbutremainsagreatchallengeforthedesignofsodiumelectrodes.Second,forthenanosodiumelectrodes,sizeeffectscanbeappliedtodesignandconstructelectrodesfromananoionicsperspective.Thermodynamical...
