Conductivity and Dielectric Studies of Lithium Trifluoromethanesulfonate Doped Polyethylene Oxide-Graphene Oxide Blend Based Electrolytes

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Abstract

Series of polymer blend consisting of polyethylene oxide (PEO) and graphene oxide (GO) as co-host polymer were prepared using solution cast method. The most amorphous PEO-GO blend was obtained using 90 wt.% of PEO and 10 wt.% of GO as recorded by X-ray diffraction (XRD). Fourier transform infrared spectroscopy (FTIR) analysis proved the interaction between PEO, GO, lithium trifluoromethanesulfonate (LiCFO, and ethylene sulfite (ES). Incorporation of 25 wt.% LiCFOinto the PEO-GO blend increases the conductivity to 3.84 ± 0.83 × 10-6 S cm<sup>-1</sup>. The conductivity starts to decrease when more than 25 wt.% salt is doped into the polymer blend. The addition of 1 wt.% ES into the polymer electrolyte has increased the conductivity to 1.73 ± 0.05 × 10-5 S cm<sup>-1</sup>. Dielectric studies show that all the electrolytes obey non-Debye behavior.

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Azli, A. A., Manan, N. S. A., & Kadir, M. F. Z. (2015). Conductivity and Dielectric Studies of Lithium Trifluoromethanesulfonate Doped Polyethylene Oxide-Graphene Oxide Blend Based Electrolytes. Advances in Materials Science and Engineering, 2015. https://doi.org/10.1155/2015/145735

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