Characterization of Na1.3Al0.3Zr1.7(PO4)3 solid electrolyte ceramics by impedance spectroscopy

• Published in: Solid state ionics Vol. 271; pp. 128 - 133
• Main Authors: Kazakevičius, E., Kežionis, A., Žukauskaitė, L., Barré, M., Šalkus, T., Žalga, A., Selskis, A., Orliukas, A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-03-2015; Elsevier
• Subjects: Chemical Sciences; Condensed Matter; Electrolyte; Impedance; Material chemistry; Materials Science; NASICON; Physics; Electrolyte; Impedance; NASICON
• ISSN: 0167-2738; 1872-7689
• DOI: 10.1016/j.ssi.2014.09.038

The NASICON-type Na1.3Al0.3Zr1.7(PO4)3 compound has been synthesized by Pechini method. The investigation of the electrical properties was performed in 10Hz–3·109Hz and 300–500K frequency and temperature ranges by means of impedance spectroscopy. The results allowed us to explore the properties of dispersion of electrical properties attributed to charge carrier relaxation. The distribution of relaxation times function was obtained for experimental data by numerically solving a set of integral equations. To reveal the influence of compositional variations on electrical properties the results were compared with the ones of Na1.3Al0.3Ti1.7(PO4)3.
•Analysis of impedance data is performed calculating DRT functions.•Conductivity of Na1.3Al0.3Zr1.7(PO4)3 has higher values compared to Na1.3Al0.3Ti1.7(PO4)3.•Smaller Na1.3Al0.3Zr1.7(PO4)3 ceramic grains lead to higher grain boundary conductivity.