Effect of the potassium iodide in tetrapropyl ammonium iodide-polyvinyl alcohol based gel polymer electrolyte for dye-sensitized solar cells
Low ionic conductivity in gel polymer electrolytes with large cations is undoubtedly a critical issue. This research’s main objective was to explore potassium iodide influences on the conductivity in gel polymer electrolytes. PVA-based gel polymer electrolytes (GPEs), including tetrapropyl ammonium...
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Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
Elsevier GmbH
2021
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Online Access: | http://eprints.utem.edu.my/id/eprint/26144/2/1-S2.0-S0030402621015448-MAIN%20PUBLISHED%20VERSION%20%28SEPT%202021%29.PDF http://eprints.utem.edu.my/id/eprint/26144/ https://www.sciencedirect.com/science/article/pii/S0030402621015448 https://doi.org/10.1016/j.ijleo.2021.167978 |
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Summary: | Low ionic conductivity in gel polymer electrolytes with large cations is undoubtedly a critical issue. This research’s main objective was to explore potassium iodide influences on the conductivity in gel polymer electrolytes. PVA-based gel polymer electrolytes (GPEs), including tetrapropyl ammonium iodide and potassium iodide have been prepared. The GPEs have been characterized by X-ray diffraction (XRD) and electrical impedance spectroscopy (EIS). The GPEs
prepared haves been recognized as an amorphous region through the X-ray diffraction analysis. The GPE sample’s conductivity (100 wt% of tetrapropyl ammonium iodide) of 6.24 × 10− 3 S cm− 1 was the lowest. The existence of potassium iodide in the GPE system improves the conductivity. The conductivity of 9.72 × 10− 3 S cm− 1 of GPE containing 30 wt% of tetrapropyl ammonium iodide and 70 wt% of potassium iodide was the highest derived from the EIS analysis. All prepared GPEs have the potential to be used for dye-sensitized solar cell applications. The dye sensitized solar cell efficiency has been improved by ~30% if potassium iodide exists in the GPE
system. |
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