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Investigation on the effects of addition of SiO2 nanoparticles on ionic conductivity, FTIR, and thermal properties of nanocomposite PMMA–LiCF3SO3–SiO2

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Abstract

Composite polymer electrolyte systems composed of poly(methyl methacrylate) (PMMA) as the host polymer, lithium trifluoromethanesulphonate (also known as lithium triflate; LiCF3SO3) as dopant salt, and a variety of different concentrations of nano-sized fumed silica (SiO2) as inorganic filler were studied. The effect upon addition of SiO2 on the ionic conductivity of the composite polymer electrolytes was investigated, and it was proven that the ionic conductivity had been enhanced. In addition, the interfacial stability also showed improvement. Maximum conductivity was obtained upon addition of 2 wt.% SiO2. The complexation of PMMA and LiCF3SO3 was verified through Fourier transform infrared studies. The thermal stability of the polymer electrolytes was also found to improve after dispersion of inorganic filler. This was proven in the thermogravimetric studies.

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Authors and Affiliations

  1. Faculty of Engineering & Science, Universiti Tunku Abdul Rahman, Setapak, 53300, Kuala Lumpur, Malaysia

    S. Ramesh & Liew Chiam Wen

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  1. S. Ramesh
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  2. Liew Chiam Wen
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Correspondence to S. Ramesh.

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Ramesh, S., Wen, L.C. Investigation on the effects of addition of SiO2 nanoparticles on ionic conductivity, FTIR, and thermal properties of nanocomposite PMMA–LiCF3SO3–SiO2 . Ionics 16, 255–262 (2010). https://doi.org/10.1007/s11581-009-0388-3

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  • DOI: https://doi.org/10.1007/s11581-009-0388-3

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