Development of sodium hybrid quasi-solid electrolytes based on porous NASICON and ionic liquids

•Novel Na-hybrid electrolytes based on porous NASICON and commercial ionic liquids, has been prepared.•These new hybrid electrolytes present an enhanced conductivity (around 1 mS cm-1 at 30°C) of one order of magnitude respect to pore-free sintered NASICON samples•Thinner films of this porous NASICON would permit the manufacture of functional macroporous inorganic separators acting as a Na+ reservoirs.