Publication Type:

Journal Article


Ionics, Volume 19, Number 10, p.1375-1379 (2013)



Average particle size, Composite electrolytes, Conductivity enhancement, Conductivity measurements, Impedance spectroscopy, Ionic conduction in solids, Ionic conductivity, Nanocomposite solid polymer electrolytes, Nanocomposites, Polyelectrolytes, Polymers, Solar cells, Solid polymer electrolytes, Solution cast methods


Nanocomposite solid polymer electrolytes (NCSPEs) with conducting species other than Li ions are being investigated for solid-state battery applications. Pristine solid polymer electrolytes (SPEs) do not show ionic conductivity suitable for batteries. Addition of inert fillers to SPEs is known to enhance the ionic conductivity. In this paper, we present the role of silica nanoparticles in enhancing the ionic conductivity in NCSPEs with sodium as conducting species. Sodium bromide is complexed with the host polyethylene glycol polymer by solution cast method and silica nanoparticles (SiO2, average particle size 7 nm) are incorporated into the complex in small amounts. The composites are characterized by powder XRD and IR spectroscopy. Conductivity measurements are undertaken as a function of concentration of salt and also as a function of temperature using impedance spectroscopy. Addition of silica nanoparticles shows an enhancement in conductivity by 1-2 orders of magnitude. The results are discussed in terms of interaction of nanoparticles with the nonconducting anions. © 2013 Springer-Verlag Berlin Heidelberg.


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Cite this Research Publication

Da Praveen, Bhat, S. Vb, and Damle, Rc, “Role of silica nanoparticles in conductivity enhancement of nanocomposite solid polymer electrolytes: (PEGx NaBr): YSiO2”, Ionics, vol. 19, pp. 1375-1379, 2013.