Details

Autor(en) / Beteiligte

• Chapi, Sharanappa
• S., Raghu
• H., Devendrappa

Titel

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

Ist Teil von

• Ionics, 2016-06, Vol.22 (6), p.803-814

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2016

Link zum Volltext

Quelle

SpringerLink (Online service)

Beschreibungen/Notizen

• This paper reports the polyethylene oxide/polyvinylpyrrolidone (PEO/PVP) blend with cobalt chloride (CoCl 2 ) films prepared using spin coating method on blue star glass substrate. The XRD analysis shows the decrease in the crystallinity nature of the CoCl 2 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 %)/CoCl 2 (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.