Electrical conducting properties of Na2Zn2TeO6 thick films fabricated by aerosol deposition

•Na2Zn2TeO6 (NZTO) thick film formed on a metal substrate by aerosol deposition.•As-deposited NZTO thick film showed ionic conductivity of ∼1 × 10−5 S cm−1 at 27 °C.•Electronic conductivity of NZTO thick film is four orders lower than ionic conductivity. We fabricated Na2Zn2TeO6 (NZTO) ceramic electrolyte thick films by aerosol deposition (AD) method without applying any thermal treatment. Ball-milled NZTO powders are directly splayed onto a metallic substrate to form the thick film via impact consolidation phenomena at room temperature. NZTO film formed by AD has a thickness of 25 µm and an identical crystal structure with base powder. Ionic conductivity of as-deposited NZTO thick film was estimated to be 0.74 × 10−5 S cm−1 at room temperature. On the contrary, electronic conductivity of the film was four orders lower than the ionic conductivity. Although the ionic conductivity of as-deposited NZTO film by AD is more than one order of magnitude lower than that of sintered NZTO, obtained electrical conducting property is acceptable level for thin film sodium-ion battery application.