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- W1987766528 abstract "This study investigates the electrochemical properties of electrolyte-impregnated micro-porous ceramic (Al2O3) films as framework supports in dye-sensitized solar cells (DSSCs). A field-emission scanning electron microscope (FE-SEM) is used to characterize the morphology on both surfaces of the ceramic membranes, which exhibit high porosity (41–66%) and an open cylindrical pore structure. Electrochemical impedance analysis reveals that the conductivity of the electrolyte-impregnated ceramic membrane is lower (6.24–9.39 mS cm−1) than the conductivity of the liquid electrolyte (25 mS cm−1), with an Archie's relationship by a power of 1.81 to the porosity value. The diffusivity of tri-iodide ions (I3−) is slowed from 1.95 × 10−5 to 0.68 × 10−5 cm2 s−1 in the ceramic-containing cells. The exchange current density at the Pt-electrolyte interface decreases slightly (less than 5%) when the Al2O3 membranes were used in the symmetric cells, implies that the contact of the denser ceramic top structure on the Pt electrode does not interfere with the I3− charge transfer. The ceramic films can prevent solvent evaporation and maintain conductivity. The long-term cell efficiencies are evaluated up to 1248 h under alternating light soaking and darkness (3 days/4 days) cycles. The cells containing the ceramic films outperform the control cells." @default.
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- W1987766528 date "2011-04-01" @default.
- W1987766528 modified "2023-10-17" @default.
- W1987766528 title "Elucidation of electrochemical properties of electrolyte-impregnated micro-porous ceramic films as framework supports in dye-sensitized solar cells" @default.
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- W1987766528 doi "https://doi.org/10.1016/j.jpowsour.2010.12.004" @default.
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