Sol–gel synthesis and characterization of Li2CO3–Al2O3 composite solid electrolytes

Sulaiman, M. and Rahman, A.A. and Mohamed, N.S. (2016) Sol–gel synthesis and characterization of Li2CO3–Al2O3 composite solid electrolytes. Ionics, 22 (3). pp. 327-332. ISSN 0947-7047, DOI

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Composite solid electrolytes in the system (1−x-)Li2CO3-xAl2O3, with x=0.0-0.5 (mole), were synthesized by a sol-gel method. The synthesis carried out at low temper- ature resulted in voluminous and fluffy products. The obtained materials were characterized by X-ray diffraction, differential scanning calorimetry, scanning electron microscopy/energy- dispersive X-ray, Fourier transform infrared spectroscopy and AC impedance spectroscopy. Structural analysis of the samples showed an amorphous feature of Li2CO3 and traces of α-LiAlO2, γ-LiAlO2 and LiAl5O8. The prepared composite samples possess high ionic conductivities at 130-180 °C on account of the presence of lithium aluminates as well as the formation of a high concentration of an amorphous phase of Li2CO3 via this sol-gel preparative technique.

Item Type: Article
Funders: University of Malaya: Research grant (RG021/09AFR)
Uncontrolled Keywords: Sol–gel; Composite solid electrolyte; Lithium carbonate; XRD; DSC; SEM; EDX
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 05 Oct 2017 01:00
Last Modified: 05 Oct 2017 01:00

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