Affiliation:
1. Universiti Teknologi MARA
2. Universiti Malaya
Abstract
(100-x) LiClO4-xSiO2(x is mol %) solid composite electrolytes in various compositions were synthesized by modified sol-gel process with sintering at 200 °C. The electrical and structural properties of the composites were investigated. The ionic conductivity of the composites increased with mol % of the dispersoid and then decreased. The highest conductivity was obtained for x = 50 mol % with a value of 4.06 × 10-7S cm-1at room temperature. The enhancement in conductivity was more than two orders of magnitude when compared to the host material. The higher conductivity in the SiO2dispersed system was interpreted in terms of space charge layer and percolation theory. The temperature dependence of conductivity of all samples were Arrhenian in nature and exhibited a maximum of 10-3S cm-1at T = 140 °C for x = 50 mol %. XRD spectra showed presence of heterogeneous phase of LiClO4-SiO2crystalline peaks.
Publisher
Trans Tech Publications, Ltd.
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