研究目的
Investigating the enhancement of ionic conductivity and mechanical properties of “soggy sand” electrolytes with AlOOH nanofibers for dye-sensitized solar cells.
研究成果
The incorporation of AlOOH nanofibers into ionic liquid electrolytes significantly enhances the ionic conductivity and mechanical properties of “soggy sand” electrolytes. The highest ionic conductivity reaches 3.69 mS cm?1 at room temperature, which is 4 times than that of the pristine ionic liquid electrolyte. The DSSC with AlOOH nanofibers in electrolyte yields a high efficiency up to 7.89%, which is 29% higher than that of the reference device. The study demonstrates the potential of AlOOH nanofibers as a promising candidate material in “soggy sand” electrolytes for DSSCs and other devices.
研究不足
The study does not discuss the long-term stability of the DSSCs with AlOOH nanofibers under operational conditions. The scalability and cost-effectiveness of synthesizing AlOOH nanofibers at a large scale are not addressed.
1：Experimental Design and Method Selection:
The study incorporates AlOOH nanofibers into ionic liquid electrolytes to enhance their mechanical property and ionic conductivity. The interaction between AlOOH nanofibers and ionic liquids is investigated through various techniques.
2：Sample Selection and Data Sources:
AlOOH nanofibers are synthesized by the hydrothermal synthetic technique. Ionic liquids, 1-allyl-3-methylimidazolium iodide (AMII) and 1-hexyl-3-methylimidazolium iodide (HMII), are synthesized according to the literature.
3：List of Experimental Equipment and Materials:
Instruments used include X-ray diffraction (XRD) diffractometer, high-resolution transmission electron microscopy (TEM), Fourier transformed infrared spectra (FTIR) spectrophotometer, Raman spectra spectrometer, Keithly 2611 source meter, Solartron SI 1287 electrochemical interface, and a Solartron 1255B frequency response analyzer.
4：Experimental Procedures and Operational Workflow:
The fabrication procedure for TiO2 colloidal, dye-sensitized photoelectrodes and devices is described. The ionic conductivity of electrolyte is performed on a self-contained cell model with a sandwich configuration of stainless steel electrode/electrolyte/stainless steel electrode.
5：Data Analysis Methods:
The ionic conductivity is calculated from the measured bulk electrolyte resistance. The relationship between AlOOH and imidazole ring of AMII ionic liquid is investigated by the FTIR spectra. X-ray photoelectron spectroscopy (XPS) of AlOOH and mixture of AlOOH and AMII is performed to obtain the detailed information for the interaction.
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