The nacrite-NaCl nanohybrid material, Si2Al2O5(OH)(4)center dot(1-(alpha+delta))NaCl center dot(1-delta)H2O with {alpha = 0.2, delta = 0.02}, has been prepared at ambient temperature by straightforward intercalation of sodium chloride in the interlamellar space of Tunisian nacrite, a reference clay mineral. The structural identification of the elaborated nanohybrid has been determined by means of X-ray diffraction and infrared spectroscopy. Thermogravimetric analysis carried out that in-situ heat treatment of the elaborated nanohybrid induces an amorphous nanohybrid Si2Al2O7 center dot(1-(alpha+delta))NaCl at 723 K, proceeding with heating till 923 K leads to a highly amorphous and disordered nanohybrid material labeled Si2Al2O7 center dot{(1-(alpha+delta))/2}Na2O. The electrochemical impedance spectroscopy reveals that the elaborated nanohybrid exhibits a fairly high ionic conductivity up to 10(-2) S m(-1) at higher temperatures and can be classified as a superionic conductor. (C) 2017 Elsevier Ltd. All rights reserved.