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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.49 [2011] >
IJPAP Vol.49(10) [October 2011] >
| Title: | Hot-pressed nano-composite polymer electrolytes: (1-x) [70PEO:30KBrO3]:xSiO2 |
| Authors: | Chandra, Angesh
Chandra, Archana
Thakur, S S |
| Keywords: | Hot-pressed polymer electrolytes
Ionic conductivity
Scanning electron microscope
Differential scanning calorimetry |
| Issue Date: | Oct-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The electrical and
electrochemical properties of PEO-based hot-pressed nano-composite polymer
electrolyte (NCPE) membranes: (1-x) [70PEO:30KBrO3]:xSiO2,
where x = 0-20 wt. (%), have been studied. NCPE membranes have been
casted using a novel hot-press technique in place of the traditional solution
cast method. The conventional Solid Polymer Electrolyte (SPE) composition:
(70PEO: 30KBrO3), identified as the highest conducting film at room
temperature, has been used as Ist-phase host matrix and nano-size
(~8 nm) particles of SiO2 as IInd-phase dispersoid. As a
consequence of dispersal of SiO2 in SPE host, a conductivity
enhancement of an order of magnitude was achieved in NCPE film: [95(70PEO:30KBrO3):5SiO2].
This composition has been referred to as Optimum Conducting Composition (OCC).
Materials characterization has been done with the help of SEM and DSC
techniques. The ion transport behaviour in NCPE membranes have been discussed
on the basis of conductivity (σ), mobility (µ), mobile ion concentration (n)
and ionic transference number (tion)
studies. The temperature dependent conductivity studies have also been done to
compute the activation energy (Ea)
values by least square linear fitting of ‘logσ-1/T’ Arrhenius plots. Thin
film solid-state polymeric batteries were fabricated using NCPE OCC as
electrolyte and the cell-potential discharge characteristics were studied under
different load conditions. |
| Page(s): | 698-702 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.49(10) [October 2011]
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