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 ammo...
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| Main Authors: | , , , |
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| Format: | Article |
| Published: |
Elsevier
2021
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/26408/ |
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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 x 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 x 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 dyesensitized solar cell efficiency has been improved by similar to 30% if potassium iodide exists in the GPE system. |
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