Document Type
Conference Item
Publication Date
1-1-2017
Abstract
Nasicon type, Mg0.5+x/2Si2-xAlx(PO4)3 was synthesized using citric acid assisted sol-gel method. The X-ray diffraction was applied to investigate the effect of extra Mg2+ interstitial ion on the phase, unit cell parameters and structure of the samples. The Mg0.625Si1.75Al0.25(PO4)3 sample exhibited highest bulk conductivity value of 1.54 ×10-4 S cm-1 at ambient temperature. The frequency dependence of the σac of these ceramic electrolytes follows the universal power law variation, σac (ω) = σo + Aωα. The conductivity parameters such as hopping frequencies, charge carrier concentration and mobile ion concentration proved that the increase in conductivity with x was due to the existing of Mg2+ interstitial ion. The experiment results also revealed that the dielectric constant and dielectric loss decreased with frequency. The Mg0.625Si1.75Al0.25(PO4)3 was found to be electrochemically stable up to 2.51 V at ambient temperature.
Keywords
Ceramic, Electrolyte, Mg electrolyte, Interstitial ion, Nasicon
Divisions
Science
Event Title
6th International Conference on Solid State Science and Technology (ICSSST 2017) and Workshop on Advanced Materials Technology: Growth and Characterization
Event Location
Olive Tree Hotel, Penang
Event Dates
13-16 November 2017
Event Type
conference
Additional Information
Conference paper