CAJ | 학술논문

采用二甲基亚砜( DMSO)作为锂二次电池的电解液,研究了锂在DMSO中的沉积形貌和循环效率。比较了六氟磷酸锂(LiPF6)在DMSO、碳酸丙烯酯(PC)和1,3-二氧环戊烷(DOL)3种溶剂中的沉积形貌和循环效率,并研究了LiPF6、四氟硼酸锂(LiBF4)、高氯酸锂(LiClO4)和二(三氟甲基磺酰)亚胺锂(LiTFSI)4种锂盐在DMSO中的沉积形貌和循环效率。结果表明,锂在DMSO中沉积得到的表面光滑平整且致密均匀,循环效率在前10周要高于在PC中的,溶剂DMSO有望用于金属锂二次电池中。
채용이갑기아풍( DMSO)작위리이차전지적전해액,연구료리재DMSO중적침적형모화순배효솔。비교료륙불린산리(LiPF6)재DMSO、탄산병희지(PC)화1,3-이양배무완(DOL)3충용제중적침적형모화순배효솔,병연구료LiPF6、사불붕산리(LiBF4)、고록산리(LiClO4)화이(삼불갑기광선)아알리(LiTFSI)4충리염재DMSO중적침적형모화순배효솔。결과표명,리재DMSO중침적득도적표면광활평정차치밀균균,순배효솔재전10주요고우재PC중적,용제DMSO유망용우금속리이차전지중。
Dimethyl sulfoxide( DMSO) was used as the solvent of electrolyte in the rechargeable lithium metal batteries. The lithium deposition morphology and cycling efficiency in DMSO, propylene carbonate( PC) and 1,3-dioxolane( DOL) with lithium hexafluorophosphate ( LiPF6 ) as the solute and in DMSO with lithium hexafluorophosphate( LiPF6 ) , lithium tetrafluoroborate ( LiBF4 ) , lithium perchlorate ( LiClO4 ) or lithium bis ( trifluoromethane sulfonimide) ( LiTFSI) ] as the solute respectively were investigated and compared. The re-suts show that Li surface deposited in the DMSO solution was smooth and uniform and the lithium cycling effi-ciency in the DMSO solvent was higher than that in PC solvent in the first ten cyclings.