Conductivity behaviour in novel quasi-solid-state electrolyte based on polyacrylonitrile and tetrahexylammonium iodide intended for dye sensitized solar cells
Artikel i vetenskaplig tidskrift, 2013

The conduction of iodide ions in gel polymer electrolytes and the performance of dye sensitized solar cells containing such an electrolyte can be enhanced by incorporating a salt having a bulky cation. In this work, polyacrylonitrile (PAN) and Hex(4)N(+)I(-) based gel electrolytes with ethylene carbonate and propylene carbonate as plasticizers have been studied. The variation of conductivity and molar conductivity with salt concentration has been discussed in order to understand the mechanism of iodide ion conductivity in this system. Out of the various compositions studied, the electrolyte containing 120 % salt with respect to weight of PAN showed the highest conductivity, 2.0 X 10(-3) Scm(-1) at 25 degrees C and a glass transition at - 102.3 degrees C. The electrolytes exhibit predominantly ionic behaviour and because of the bulky cation a negligible cationic transport is shown. A quasi-solid-state dye sensitized solar cell was fabricated employing the optimized gel electrolyte. This cell showed an energy conversion efficiency of 3.1 % and a short circuit current density of 8.1 mAcm(-2) under irradiation of 1000 Wm(-2).

POLYMER ELECTROLYTES

GEL ELECTROLYTES

COMPOSITE

RELAXATION

IONIC-CONDUCTIVITY

ASSOCIATION

EFFICIENCY

VISCOSITY

PLASTICIZED ELECTROLYTE

SOLVENTS

Författare

T M W J Bandara

Chalmers, Teknisk fysik, Fasta tillståndets fysik

T. Svensson

Chalmers, Teknisk fysik

M. A. K. L. Dissanayake

Maurizio Furlani

Chalmers, Teknisk fysik, Fasta tillståndets fysik

W. J. M. J. S. R. Jayasundara

P. S. L. Fernando

Ingvar Albinsson

Göteborgs universitet

Bengt-Erik Mellander

Chalmers, Teknisk fysik, Nukleär teknik

Journal of the National Science Foundation of Sri Lanka

1391-4588 (ISSN)

Vol. 41 3 175-184

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Materialvetenskap

Ämneskategorier

Annan naturvetenskap

DOI

10.4038/jnsfsr.v41i3.6056

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2017-10-06