Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31515
Li4SiO4 Prepared by Sol-gel Method as Potential Host for LISICON Structured Solid Electrolytes

Authors: Syed Bahari Ramadzan Syed Adnan, Nor Sabirin Mohamed, Norwati K.A


In this study, Li4SiO4 powder was successfully synthesized via sol gel method followed by drying at 150oC. Lithium oxide, Li2O and silicon oxide, SiO2 were used as the starting materials with citric acid as the chelating agent. The obtained powder was then sintered at various temperatures. Crystallographic phase analysis, morphology and ionic conductivity were investigated systematically employing X-ray diffraction, Fourier Transform Infrared, Scanning Electron Microscopy and AC impedance spectroscopy. XRD result showed the formation of pure monoclinic Li4SiO4 crystal structure with lattice parameters a = 5.140 Å, b = 6.094 Å, c = 5.293 Å, β = 90o in the sample sintered at 750oC. This observation was confirmed by FTIR analysis. The bulk conductivity of this sample at room temperature was 3.35 × 10-6 S cm-1 and the highest bulk conductivity of 1.16 × 10-4 S cm-1 was obtained at 100°C. The results indicated that, the Li4SiO4 compound has potential to be used as host for LISICON structured solid electrolyte for low temperature application.

Keywords: Conductivity, LISICON, Li4SiO4, Solid electrolyte, Structure.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2854


[1] A.R. West, "Solid State Chemistry and Its applications," John Wiley and Sons Ltd, New York, 1984, pp. 478-481.
[2] A. Khorassini and A.R. West, "Li+ ion conductivity in the system Li4SiO4---Li3VO4 ," Solid State Chemistry, Vol. 53 , pp. 373 , July 1984.
[3] A. Khorassini and A.R. West," New Li+ Ion Conductor in the System Li4SiO4-Li3AsO4," Solid State Ionics, Vol. 7, pp. 1, 1982.
[4] X. Song, M. Jia, R. Chen," Synthesis of Li3VO4 by the Citrate Sol-gel Method and its Ionic Conductivity," Journal of Materials Processing Technology, Vol. 120, pp. 21-25, 2002.
[5] X. Wu, Z. Wen, X. Xu, X. Wang, J. Lin," Fabrication of Li4SiO4 Pebbles by Sol Gel Technique", Journal of Nuclear Materials, Vol. 85, pp. 222, 2009.
[6] X. Wu, Z. Wen, X. Xu, X. Wang, J. Lin," Synthesis and Characterization of Li4SiO4 nano pawders by a water based Sol Gel process", Fusion Engineering and Design, Vol. 35, pp. 471, 2010.
[7] B.L. Dubey and A.R. West," Crystal Chemistry of Li4XO4 Phases X= Si,Ge,Ti," J. Inorg. nucl. Chem, Vol. 35, pp. 3714, 1973.
[8] F.J. Humphreys and M. Hatherly,"Recrystallization and related annealing phenomena", Elsevier, U.K 1995.
[9] B. Shokri, M. Abbasi Firouzjah, S.I. Husseini," International Symposium on Plasma Chemistry (ISPC),"conference, Bouchum, Germany, July 26-31 2009.
[10] K.S. Hwang, Y.H. Lee, S..H. Bo," Preparation of Lithium Zirconate Nano Powder Prepared by Electrostatic Spraying for CO2 sorbent," Materials Science Poland, Vol. 25, No.4, 2007.
[11] A.Aboulaich, D.E Conte, J.Olivier-Fourcade, C.Jordy, P.Willmann, J.C. Jumas,"Influence of Alkali Ion Doping on the Electrochemical Performances on tin-based composite matrials," Journal of Power Sources, Vol. 195, pp. 3316-3322, 2010.
[12] J. W. Fergus," Ceramic and Polymeric Solid Electrolytes for Lithium Ion Batteries," Journal of Power Sources, Vol. 195, pp. 4554, 2010.
[13] R.I Smith and A.R West." Crystal Structure of the Lithium Ion Conductor , Li3.4Ga0.2SiO4," Journal of Solid State Chemistry, Vol. 88, pp. 564-570, 1990.
[14] A.R. West," Ionic Conductivity of Oxide Based on Li4SiO4," Journal of Applied Electrochemistry, Vol.3, pp. 327, 1973.
[15] S. Hui, J. Roller, S. Yick, X. Zhang, Cyrille, Y. Xie, R. Maric, D. Ghose," A brief review of the ionic conductivity enhancement for selected oxide electrolytes," Journal of Power Sources,Vol.172, pp. 493, 2007.