Abstract

We report the preparation and characterization of hybrid inorganic–organic membranes based on NASICON-type Li 1 + x Al x Ge 2 − x (PO 4 ) 3 (LAGP) as the fast ion conducting ceramic and fast ionic polymeric solid electrolyte PEO:PVDF:LiBF 4 for possible application as Li anode protecting membrane in lithium air batteries. The resulting membranes showed enhanced conductivity of 10 − 4 S cm − 1 in combination with improved mechanical flexibility when compared to the ceramic along with higher stability in aqueous solutions in comparison with pure polymer. • Li + conducting hybrid LAGP: (PEO:PVDF:LiBF 4 ) membrane synthesized and characterized • Improved mechanical flexibility and enhanced total conductivity of the membrane • Composite membrane more stable in aqueous solutions than polymer membrane

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