Ionics

, Volume 22, Issue 6, pp 803–814 | Cite as

Enhanced electrochemical, structural, optical, thermal stability and ionic conductivity of (PEO/PVP) polymer blend electrolyte for electrochemical applications

Original Paper
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Abstract

This paper reports the polyethylene oxide/polyvinylpyrrolidone (PEO/PVP) blend with cobalt chloride (CoCl2) films prepared using spin coating method on blue star glass substrate. The XRD analysis shows the decrease in the crystallinity nature of the CoCl2 with addition of the dopant. The FT-IR analysis reveals that interaction between cobalt ions with polymer blend confirms the complexation. The maximum ionic conductivity 0.65 × 10−4 S cm−1 was observed for PEO (45 %)/PVP (45 %)/CoCl2 (10 %) at 30 °C. The optical energy band gaps decreases and Urbach energy were observed increases with increasing the dopant concentration. The DSC/TGA results showed that thermal stability of films enhanced with dopant concentration. Cyclic voltammogram (CV) study shows that the electrochemical strength improves with dopant concentration. These obtained results imply that polymer blend electrolytes are suitable candidature for various applications such as electronic and optical devices like electro-chromic display, fuel cells, gas sensors and solid state batteries.

Keywords

Polymer blends XRD Optical band gap Ionic conductivity Thermal properties Cyclic voltammetry 
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Notes

Acknowledgments

Authors are thankful to UGC, Government of India for project fellowship (F.No.41-879/2012/SR dated 25-07-2012). The authors would like to acknowledge the PURSE, Mangalore University; Mangalagangotri for SEM and DSC/TGA facilities gratefully.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of PhysicsMangalore UniversityMangalagangothriIndia

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