Electrical Conductivity and Structural Studies on the Binary Solid State Li2WO4-LiI-Al2O3 Electrolyte

M.K. Omar; Mohamad Rusop; Azizah Hanom Ahmad

doi:10.4028/www.scientific.net/AMR.1109.324

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1109Electrical Conductivity and Structural Studies on...

Electrical Conductivity and Structural Studies on the Binary Solid State Li₂WO₄-LiI-Al₂O₃ Electrolyte

Abstract:

The binary solid electrolyte Li₂WO₄-LiI with incorporation of nanosize Al₂O₃ was prepared in solid state reaction and characterized by Electrical Impedance Spectroscopy (EIS), Field Emission Scanning Electron Microscopy (FESEM) and Fourier Transform Infrared (FTIR) spectroscopy. Maximum electrical conductivity of 3.35x10^-3 Scm^-1 was recorded for the sample containing 20 wt. % of LiI. Enhancement of electrical conductivity up to 5.8x10^-3Scm^-1 was achieved when 0.5 wt. % of Al₂O₃ was added into the optimum composition of the binary Li₂WO₄-LiI system. Tetrahedral structure of WO₄ that appear at wave number of 906 cm^-1 and 955 cm^-1 in the FTIR spectroscopy confirmed. The existence of conducting pathway for migrations of Li ions in system that contributes to high electrical conductivity.

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Periodical:

Advanced Materials Research (Volume 1109)

Pages:

324-327

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1109.324

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Online since:

June 2015

Authors:

M.K. Omar, Mohamad Rusop, Azizah Hanom Ahmad

Keywords:

Field Emission Scanning Electron Microscopy, Fourier Transform Infrared, Impedance Spectroscopy, Ionic Conductivity, Solid State Electrolyte

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