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Effect of Alumina Filler on Spherulite Growth and Ionic Conductivity of Peo9(LiClO4) Solid Polymer Electrolyte


Affiliations
1 Rajarata University of Sri Lanka, Mihintale, Sri Lanka
2 National Institute of Fundamental Studies, Hantana Road, Kandy, Sri Lanka
3 Department of Physics, The Open University of Sri Lanka, Nawala, Nugegoda, Sri Lanka
4 Department of Physics, Chalmers University of Technology, Gothenburg, Sweden
 

The effect of incorporation of alumina on conductivity and in situ growth of spherulites in (PEO)9LiClO4 solid polymer electrolyte was studied using polarized microscopy, impedance and infrared spectroscopy. Fourfold enhancement in ionic conductivity correlated with increase in the amorphous nature of the polymer electrolyte was observed with the addition of 15 wt% of alumina having 5.5 nm pore size. The addition of 5 wt% of alumina with pore size <10 μm, increased the ionic conductivity by nearly 3%. Filler particles may act as nuclei for the spherulites, while preventing the recrystallization tendency of the polymer and hence increase its conductivity.

Keywords

Alumina Filler, Ionic Conductivity Polymer Electrolyte, Polyethylene Oxide, Spherulite.
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  • Effect of Alumina Filler on Spherulite Growth and Ionic Conductivity of Peo9(LiClO4) Solid Polymer Electrolyte

Abstract Views: 150  |  PDF Views: 72

Authors

B. A. Karunaratne
Rajarata University of Sri Lanka, Mihintale, Sri Lanka
F. A. E. Nugera
Rajarata University of Sri Lanka, Mihintale, Sri Lanka
M. A. K. L. Dissanayake
National Institute of Fundamental Studies, Hantana Road, Kandy, Sri Lanka
G. K. R. Senadeera
Department of Physics, The Open University of Sri Lanka, Nawala, Nugegoda, Sri Lanka
B. E. Mellander
Department of Physics, Chalmers University of Technology, Gothenburg, Sweden

Abstract


The effect of incorporation of alumina on conductivity and in situ growth of spherulites in (PEO)9LiClO4 solid polymer electrolyte was studied using polarized microscopy, impedance and infrared spectroscopy. Fourfold enhancement in ionic conductivity correlated with increase in the amorphous nature of the polymer electrolyte was observed with the addition of 15 wt% of alumina having 5.5 nm pore size. The addition of 5 wt% of alumina with pore size <10 μm, increased the ionic conductivity by nearly 3%. Filler particles may act as nuclei for the spherulites, while preventing the recrystallization tendency of the polymer and hence increase its conductivity.

Keywords


Alumina Filler, Ionic Conductivity Polymer Electrolyte, Polyethylene Oxide, Spherulite.

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DOI: https://doi.org/10.18520/cs%2Fv120%2Fi5%2F900-906