Journal
ELECTROCHIMICA ACTA
Volume 220, Issue -, Pages 573-580Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.10.135
Keywords
PVdF-HFP; PEO; gel polymer electrolyte; fumed silica; dye-sensitized solar cell
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Funding
- High Impact Research (HIR) [H-21001-F000046]
- Fundamental Research Grant Scheme from Ministry of Education, Malaysia [FP012-2015A]
- Postgraduate Research Grant [PG123-2015B]
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Novel gel polymer electrolytes (GPEs) are prepared using poly(vinylidene fluoride-co-hexafluoro propylene) copolymer (PVdF-HFP) and polyethylene oxide (PEO) in presence of fumed silica nanofiller with the designated system of PVdF-HFP:PEO:EC:PC:Nal:SiO2:I-2. GPEs are examined using electrochemical impedance spectroscopy (EIS) and the highest ionic conductivity of 8.84 mS cm(-1) is achieved after incorporation of 13 wt.% of fumed silica (SiO2). Temperature-dependent ionic conductivity study confirms that GPE system follows Arrhenius thermal activated model. GPEs are characterized for structural studies using X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. GPEs are used to fabricate dye-sensitized solar cells (DSSCs) and tested under 1 Sun irradiation, obtaining the highest energy conversion efficiency of 9.44% after the incorporation of 13 wt.% fumed silica. Cyclic voltammetry has been performed to analyse electrochemical properties of gel polymer electrolytes. (C) 2016 Elsevier Ltd. All rights reserved.
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