Solid-state lithium batteries capable of stability against chemical reaction with Li up to voltages higher than 5.5 V are considered a promising alternative to liquid or gel electrolytes that dominate the Libattery market [1]. In addition, they can be deposited as thin film batteries (TFBs) and integrated directly onto microprocessor chips [2] . The transition to solid-state dry batteries will allow for miniaturization due to a decreased electrolyte thickness, easier handling during

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... increased safety due to the lack of a flammable electrolyte coupled with a wide electrochemical potential window, and by the reduced environmental impact of oxide based electrolytes.