Synergetic effect of TiO2 nano filler additives on conductivity and dielectric properties of PEO/PVP nanocomposite electrolytes for electrochemical cell applications

INERA Workshop 2016: Membrane and Liquid Crystal Nanostructures

Koduru, H.K.^1,3 ; Kondamareddy, K.K.^2 ; Iliev, M.T.^3 ; Marinov, Y.G.^3 ; Hadjichristov, G.B.^3 ; Karashanova, D.^4 ; Scaramuzza, N.^1,5

Dipartimento di Fisica, Universita degli Studi della Calabria, Via P. Bucci, Cubo 33B, Rende (CS)

87036, Italy^1

School of Physics and Technology, Key Laboratory of Artificial Micro, Nano Structures of Ministry of Education, Wuhan University, Wuhan

430072, China^2

Georgi Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee, Sofia

1784, Bulgaria^3

Institute of Optical Materials and Technologies, Bulgarian Academy of Sciences Acad, Georgy Bonchev St. bl. 109, Sofia

1113, Bulgaria^4

CNISM, Unità di Ricerca di Cosenza C/o, Dipartimento di Fisica, Università degli Studi della Calabria, Via P. Bucci, Cubo 31C, Rende (CS)

87036, Italy^5

关键词: Impedance analysis;    Morphological features;    Nanocomposite electrolytes;    Polymer electrolyte films;    Room-temperature conductivity;    Solid polymer electrolyte films;    Solid polymer electrolytes;    Solution-casting technique;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/780/1/012006/pdf
DOI  :  10.1088/1742-6596/780/1/012006

来源: IOP

【 摘 要 】

Sodium-ion conducting PEO/PVP blend based solid polymer electrolyte films complexed with NaIO4salt and nano-sized TiO2fillers are fabricated by employing a solution casting technique for Na-ion battery applications. Measurements of X-ray diffraction (XRD) and thermogravimetric analysis (TGA) are carried out to investigate the crystallinity and thermal stability of the solid polymer electrolytes. Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) studies are performed to understand the modifications in surface morphological features and to evaluate the size and distribution of dispersed nano-sized TiO2fillers. The room temperature ionic conductivities of polymer electrolyte films are investigated by impedance analysis in the frequency range 1 MHz - 1 Hz. The nano-sized TiO2(3 wt%) filled composite electrolyte of 'PEO/PVP/NaIO4(10 wt%)' demonstrates a maximum room temperature conductivity of 9.82 X 10-6S/cm. The influence of TiO2filler on conductivity and dielectric properties are presented in this report.