Effects of Mg^(2+) interstitial ion on the properties of Mg_(0.5+x/2)Si_(2-x)Al_(x)(PO_(4))_(3) ceramic electrolytes

作     者：Z.A.Halim S.B.R.S.Adnan F.M.Salleh N.S.Mohamed 

作者机构：Institute of Graduate StudiesUniversity of Malaya50603Kuala LumpurMalaysia Centre for Foundation Studies in ScienceUniversity of Malaya50603Kuala LumpurMalaysia 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2017年第5卷第4期

页      面：439-447页

核心收录：

学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：The authors would like to extend their gratitude toward the University of Malaya and Ministry of Education for funding this work through the Fundamental Research Grant Scheme(project no:FP006-2013B) University of Malaya Research Grant(project no:RP013A-13AFR) Postgraduate Research Grant(project no:PG032-2015A) 

主　　题：Ceramic Electrolyte Mg electrolyte Interstitial ion Nasicon 

摘      要：Nasicon type,Mg_(0.5+x/2)Si_(2-x)Al_(x)(PO_(4))_(3) was synthesized using citric acid assisted sol-gel *** X-ray diffraction was applied to investigate the effect of extra Mg^(2+)interstitial ion on the phase,unit cell parameters and structure of the *** Mg_(0.625)Si_(1.75)Al_(0.25)(PO_(4))_(3) sample exhibited highest bulk conductivity value of 1.54×10^(−4)S cm^(−1)at ambient *** frequency dependence of theσac 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 existence of Mg^(2+) interstitial *** experiment results also revealed that the dielectric constant and dielectric loss decreased with *** Mg_(0.625)Si_(1.75)Al_(0.25)(PO_(4))_(3) was found to be electrochemically stable up to 2.51 V at ambient temperature.