Abstract
Solid-state composite polymer electrolyte PEO18LiTFSI-xDMSO (CPEx) are prepared by the casting process. An optimized freestanding electrolyte CPEx system yields a lithium ionic conductivity of 2.8×10-4 Scm-1 at 60 oC with x =1.32. The interfacial resistances of Li/CPEx and Li/CPEx/H-LAGP are examined. The interfacial resistance between CPE0 and lithium metal is reduced sharply by the addition of DMSO for CPE1.32 at 60 oC after storage about 35 days. The aqueous lithium air battery consists of Li/CPE1.32/H-LAGP electrode as a lithium protected electrode is successfully operated with LiCl saturated LiOH aqueous solution as electrolyte and Pt black as reference electrode at current density of 0.2 mAcm-1 at 60 oC.
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