A Supercooled Imidazolium Iodide Ionic Liquid as a Low-Viscosity Electrolyte for Dye-Sensitized Solar Cells

A series of allyl-functionalized imidazolium salts are reported, including 1-allyl-3-ethylimidazolium iodide and 1-allyl-3-propylimidazolium iodide, which have m.ps. close to room temp. and show typical properties of supercooled fluids if heated above their m.ps. Their viscosities in the liq. state are considerably lower than the benchmark ionic liq. used in solar cells, viz., 1-propyl-3-methylimidazolium iodide. Electrolytes contg. these new liqs. provide excellent efficiencies and good stability in dye-sensitized solar cells when subjected to an accelerated-light soaking test at 60 DegC. The structures of three of the new salts have been established in the solid state by single-crystal X-ray anal.


Published in:
INORGANIC CHEMISTRY, 45, 26, 10407-10409
Year:
2006
Laboratories:


Note: The status of this file is: EPFL only


 Record created 2007-01-09, last modified 2018-03-17

n/a:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)