Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: Infrared, 29Si NMR, and electrical studies
A new sol-gel precursor based on 1-methyl-3-[3-(trimethoxy-λ4-silyl)propyl]-1H-imidazolium iodide (MTMSPI+I−) was synthesized and investigated as a potential novel quasi solid-state ionic liquid redox electrolyte for dye-synthesized photoelectrochemical (DSPEC) cells of the Graetzel type. MTMSPI+I−...
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| Format: | Article |
| Language: | English |
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Wiley
2006-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/IJP/2006/23703 |
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| author | Vasko Jovanovski Boris Orel Robi Ješe Gregor Mali Elias Stathatos Panagiotis Lianos |
| author_facet | Vasko Jovanovski Boris Orel Robi Ješe Gregor Mali Elias Stathatos Panagiotis Lianos |
| author_sort | Vasko Jovanovski |
| collection | DOAJ |
| description | A new sol-gel precursor based on
1-methyl-3-[3-(trimethoxy-λ4-silyl)propyl]-1H-imidazolium iodide (MTMSPI+I−) was synthesized and investigated as a
potential novel quasi solid-state ionic liquid redox electrolyte
for dye-synthesized photoelectrochemical (DSPEC) cells of the
Graetzel type. MTMSPI+I− was hydrolyzed with acidified water
and the reaction products of the sol-gel condensation reactions
assessed with the help of 29Si NMR and infrared spectroscopic techniques. Results of the time-dependent spectra
analyses showed the formation of positively charged polyhedral
cube-like silsesquioxane species that still contained a small
amount of silanol end groups, which were removed after heating at 200°C. After cooling, the resulting material formed
is a tough, yellowish, and transparent solid, which could be
reheated again and used for assembling DSPEC cells. The addition
of iodine increased the specific conductivity of the hydrolyzed
and nonhydrolyzed MTMSPI+I−, which we attributed to the
formation of triiodide ions contributed to the conductivity via
the Grotthus mechanism. DSPEC cells based on a titania-dye system
with MTMSPI+I− electrolyte containing iodine (0.1 M) reached an overall efficiency between 3.3–3.7%. |
| format | Article |
| id | doaj-art-3bf344078dfd4c28a536ba93f0acff88 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2006-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-3bf344078dfd4c28a536ba93f0acff882025-08-20T03:55:41ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2006-01-01200610.1155/IJP/2006/2370323703Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: Infrared, 29Si NMR, and electrical studiesVasko Jovanovski0Boris Orel1Robi Ješe2Gregor Mali3Elias Stathatos4Panagiotis Lianos5National Institute of Chemistry, Hajdrihova 19, Ljubljana 1000, SloveniaNational Institute of Chemistry, Hajdrihova 19, Ljubljana 1000, SloveniaNational Institute of Chemistry, Hajdrihova 19, Ljubljana 1000, SloveniaNational Institute of Chemistry, Hajdrihova 19, Ljubljana 1000, SloveniaEngineering Science Department, University of Patras, Patras 26500, GreeceEngineering Science Department, University of Patras, Patras 26500, GreeceA new sol-gel precursor based on 1-methyl-3-[3-(trimethoxy-λ4-silyl)propyl]-1H-imidazolium iodide (MTMSPI+I−) was synthesized and investigated as a potential novel quasi solid-state ionic liquid redox electrolyte for dye-synthesized photoelectrochemical (DSPEC) cells of the Graetzel type. MTMSPI+I− was hydrolyzed with acidified water and the reaction products of the sol-gel condensation reactions assessed with the help of 29Si NMR and infrared spectroscopic techniques. Results of the time-dependent spectra analyses showed the formation of positively charged polyhedral cube-like silsesquioxane species that still contained a small amount of silanol end groups, which were removed after heating at 200°C. After cooling, the resulting material formed is a tough, yellowish, and transparent solid, which could be reheated again and used for assembling DSPEC cells. The addition of iodine increased the specific conductivity of the hydrolyzed and nonhydrolyzed MTMSPI+I−, which we attributed to the formation of triiodide ions contributed to the conductivity via the Grotthus mechanism. DSPEC cells based on a titania-dye system with MTMSPI+I− electrolyte containing iodine (0.1 M) reached an overall efficiency between 3.3–3.7%.http://dx.doi.org/10.1155/IJP/2006/23703 |
| spellingShingle | Vasko Jovanovski Boris Orel Robi Ješe Gregor Mali Elias Stathatos Panagiotis Lianos Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: Infrared, 29Si NMR, and electrical studies International Journal of Photoenergy |
| title | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: Infrared, 29Si NMR, and electrical studies |
| title_full | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: Infrared, 29Si NMR, and electrical studies |
| title_fullStr | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: Infrared, 29Si NMR, and electrical studies |
| title_full_unstemmed | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: Infrared, 29Si NMR, and electrical studies |
| title_short | Positively charged polysilsesquioxane/iodide lonic liquid as a quasi solid-state redox electrolyte for dye-sensitized photo electrochemical cells: Infrared, 29Si NMR, and electrical studies |
| title_sort | positively charged polysilsesquioxane iodide lonic liquid as a quasi solid state redox electrolyte for dye sensitized photo electrochemical cells infrared 29si nmr and electrical studies |
| url | http://dx.doi.org/10.1155/IJP/2006/23703 |
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