Volume 36, Number 1 (Journal of Advanced Materials-Spring 2017)                   jame 2017, 36(1): 37-52 | Back to browse issues page



DOI: 10.18869/acadpub.jame.36.1.37

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Illbeigi M, Fazlali A R, Kazazi M, Mohammadi A H. Preparation of Lithium Ion Conductor Glass-Ceramic with High Conductivity for Producing Lithium-Air and all-Solid-State Lithium-Ion Batteries . jame. 2017; 36 (1) :37-52
URL: http://jame.iut.ac.ir/article-1-740-en.html

Ph.D student 1- Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, Iran
Abstract:   (352 Views)

In this research, new lithium ion conductor glass-ceramics with NASICON-type structure (Li1+x+yAlxCryGe2-x-y (PO4)3, x+y=0.5) were synthesized using melt-quenching method and converted to glass-ceramics through heat treatment. Influence of addition of different concentrations of aluminum and chromium in LiGe2(PO4)3 glass-ceramic was investigated for ionic conduction improvement. Substitution of Ge4+ ions in NASICON structure by Al3+ and Cr3+ ions induced more Li+ ions in A2 vacant sites to obtain charge balance and also changed the unit cell parameters. These two factors led to ionic conductivity improvement of synthesized glass-ceramics. The glass-ceramics were characterized and the amorth structures were investigated by X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Energy-Dispersive X-ray spectroscopy (EDX), Differential Scanning Calorimetry (DSC) and Complex Impedance Spectroscopy (CIS). The highest lithium ion conductivity of 8.82×10-3 S/cm was obtained for x=0.4 and y=0.1 (Li1.5Al0.4Cr0.1Ge1.5(PO4)3) crystallized at 850 oC for 8 h with minimum activation energy of 0.267 eV.
 

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Type of Study: Applicable | Subject: Development of new engineering materials
Received: 2016/02/7 | Accepted: 2016/06/5 | Published: 2017/06/20

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