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Title: Ion transport characterization and cell potential discharge performance studies of hot-press casted solid polymer electrolyte (SPE): [(1-x)PEO: xAg(ClO4)]
Authors: Agrawal, R C
Ashrafi, Rehana
Sahu, Dinesh K
Mahipal, Y K
Bhatt, Alok
Keywords: Ionic conductivity;Ionic transport number;Solid polymer electrolyte;Hot-press technique;Cell potential
Issue Date: May-2013
Publisher: NISCAIR-CSIR, India
Abstract: Ion transport in poly (ethylene oxide) based Solid Polymer Electrolyte (SPE) membranes: [(1-x)PEO: xAg(ClO4)], where x = 0, 2, 4, 6, 8, 10, 15, 20 wt. (%), has been studied. SPE films of uniform thickness ~100-150 mm have been casted by hot-press technique. The conductivity dependent on salt concentration has been measured and SPE film: [85PEO: 15 Ag (ClO4)] has been identified as Optimum Conducting Composition (OCC) with room temperature conductivity (s) ~ 5.64 10-6 S/cm. The characterization of materials and ion transport properties in SPE OCC film have been done. In order to understand the ion transport mechanism, conductivity (σ), total ionic transference number (tion) and cation (Ag+) transport number (t+) have been determined using ac impedance, dc polarization and combined ac/dc techniques, respectively. The temperature dependent conductivity has also been measured to evaluate the activation energy (Ea) from the linear least square fitting of ‘log σ-1/T’ Arrhenius plot. All-solid-state battery has been fabricated in the cell configuration: Ag (anode)//Solid Polymer Electrolyte// I2 + C + SPE (cathode). The electrodes used were in the form of thin pellet. The Open Circuit Voltage (OCV) ~ 0.64 V. The cell performance has been studied by recording the cell potential discharge profiles at room temperature under different load conditions.
Page(s): 354-357
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.51(05) [May 2013]

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