Ion pair formation and its effect in PEO:Mg solid polymer electrolyte system

2002 ◽  
Vol 109 (2) ◽  
pp. 340-346 ◽  
Author(s):  
M. Jaipal Reddy ◽  
Peter P. Chu
Keyword(s):  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Ion Pair ◽  
Pair Formation ◽  
Solid Polymer ◽  
Electrolyte System ◽  
Ion Pair Formation

scholarly journals Highly Conductive Redox-Couple Solid Polymer Electrolyte System: Blend-KI-I2 for Dye-Sensitized Solar Cells

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Ravindra Kumar Gupta ◽  
Hee-Woo Rhee
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Dye Sensitized Solar Cells ◽  
Weight Fraction ◽  
Redox Couple ◽  
Solid Polymer ◽  
Equal Weight ◽  
Electrolyte System ◽  
Dye Sensitized

Ionic conductivity of a redox-couple solid polymer electrolyte system, () blend: [0.9KI : 0.1I2] with in weight fraction, is reported. A blend of poly(ethylene oxide) (abbreviated as PEO) and succinonitrile in equal weight fraction was used as a polymeric matrix instead of the PEO and succinonitrile because of its low-cost, electrical conductivity superior to the PEO, and thermal stability better than the succinonitrile. The electrolyte with showed ionic conductivity of S cm−1 and iodine ion diffusivity of nearly  cm2 s−1 at 25°C. The conductivity and diffusivity values were nearly two orders of magnitude higher than those of the PEO-KI-I2 due to the improved PEO crystallinity. It also exhibited dye-sensitized solar cell efficiency of 2.2% at 100 mW cm−2, which is twice of the cell prepared using the PEO-KI-I2 only.

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