Adnan, S.B.R.S. and Halim, Z.A. and Mohamed, N.S. (2017) Effects of Mg2+ interstitial ion on the properties of Mg0.5+x/2Si2-xAlx(PO4)3 ceramic electrolytes. In: 6th International Conference on Solid State Science and Technology (ICSSST 2017) and Workshop on Advanced Materials Technology: Growth and Characterization, 13-16 November 2017, Olive Tree Hotel, Penang.
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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.
Item Type: | Conference or Workshop Item (Paper) |
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Funders: | UNSPECIFIED |
Additional Information: | Conference paper |
Uncontrolled Keywords: | Ceramic; Electrolyte; Mg electrolyte; Interstitial ion; Nasicon |
Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
Divisions: | Faculty of Science |
Depositing User: | Mr. Mohd Safri |
Date Deposited: | 20 Apr 2018 02:56 |
Last Modified: | 20 Apr 2018 02:56 |
URI: | http://eprints.um.edu.my/id/eprint/18457 |
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