Electrochemical stability on 1-ethyl-3-methylimidazolium bis (trifluoromethyl sulfonyl) imide ionic liquid for dye sensitized solar cell application
| Autor: | Choi Yee Foong, Muhammad-Alif Lohmoh, Nur Syakinah Abd Halim, Mohd Dzul Hakim Wirzal, Muhammad Syaamil Saad |
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| Rok vydání: | 2020 |
| Předmět: |
Sulfonyl
chemistry.chemical_classification Trifluoromethyl Vapor pressure Inorganic chemistry 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry.chemical_compound Dye-sensitized solar cell chemistry Ionic liquid Materials Chemistry Physical and Theoretical Chemistry 0210 nano-technology Imide Spectroscopy |
| Zdroj: | Journal of Molecular Liquids. 313:113594 |
| ISSN: | 0167-7322 |
| Popis: | The usage of ionic liquids has recently became a promosing alternative for replacement of conventional volatile organic-based electrolyte for Dye Sensitized Solar Cells (DSSCs) due to its electrochemical stability, high conductivity and low vapor pressure. However, degradation of ionic liquid concentration is one of the major concerns which affect the efficiency of DSSCs. By using electro-oxidation method, this research aimed to evaluate the degradation of 1-Ethyl-3-Methylimidazolium bis (trifluoromethyl sulfonyl) imide [EMIM][N(Tf)2] ionic liquid by analyzing the change of concentration with respect to high voltage differences (i.e., 1 V, 2 V, 4 V, 6 V, 8 V and 10 V). FT-IR result shows that there is slight degradation in the concentration amount of [EMIM][N(Tf)2] ionic liquid which is almost negligible and there is no change in spectrum as well as functional group when compared with standard curve of [EMIM][N(Tf)2] ionic liquid from 1 V to 10 V. Apart from that, the degradation percentage of each voltage at 60 min are 8.48%, 7.90%, 3.82%, 6.08%, 3.51% and 2.86%, respectively. The highest Iron (Fe) amount was 224.45 ppm at the condition of 6 V at 5 min. It is proven that [EMIM][N(Tf)2] has high capability to be used as an electrolyte as it has high electrochemical stability in the voltage range from 1 V to 10 V. |
| Databáze: | OpenAIRE |
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