期刊
PHYSICA B-CONDENSED MATTER
卷 580, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.physb.2019.411940
关键词
Polymer blend electrolyte; Solution casting method; Cornstarch/PVP/ CH3COOLi; AC impedance; CV; Transference number
资金
- Kalasalingam Academy of Research and Education, Krishanankoil, India
Solid polymer electrolytes used in energy storage devices based on Cornstarch and Poly (vinyl Pyrrolidone) blend incorporated with lithium acetate was prepared using the solution casting method. XRD results confirmed that the amorphous nature of the as-prepared polymer electrolyte was increased by addition of salt. 80 wt % Cornstarch/20 wt % PVP/60 wt % lithium acetate added polymer blend system attains better amorphous nature than others. At ambient temperature, 60 wt % of lithium acetate added system has better bulk conductivity of 3.52 x 10(-5)Scm(-1) over the frequency range of 42 Hz to 1 MHz using AC impedance spectroscopy studies. The dielectric analysis is confirmed that the higher conducting sample was having high dielectric constant and low relaxation time for enhancing ions dynamic behaviour. The conduction mechanism of the higher conducting polymer electrolyte is explained by small polaron hopping and overlapping large polaron tunnelling conduction mechanism. From the argand plot, it is confirmed that higher conducting sample has low relaxation time.
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