Proton conducting polymer blend electrolytes based on MC: FTIR,ion transport and electrochemical studies |
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| Affiliation: | 1. Nursing Department, College of Nursing, University of Human Development, Kurdistan Regional Government, Iraq;2. Hameed Majid Advanced Polymeric Materials Research Lab., Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Sulaimani 46001, Kurdistan Regional Government, Iraq;3. The Development Center for Research and Training (DCRT), University of Human Development, Sulaymaniyah, Kurdistan Region of Iraq, Iraq;4. Department of Medical Laboratory Science, College of Science, Komar University of Science and Technology, Sulaimani 46001, Kurdistan Regional Government, Iraq;5. Department of Physics, College of Education, University of Sulaimani, Old Campus, Sulaymaniyah 46001, Iraq;6. Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O.Box 84428, Riyadh 11671, Saudi Arabia;7. Department of Physics, College of Science, University of Halabja, Halabja 46006, Kurdistan Regional Government, Iraq;8. Physics Department, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia |
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| Abstract: | In this work, the free-standing plasticized solid polymer electrolyte films were made utilizing methylcellulose (MC) and dextran (DN) doped with ammonium fluoride (NH4F) and plasticized with glycerol by a typical solution casting approach. Based on the characterizations, MC-DN-NH4F electrolyte has been shown to improve the structural, electrical, and electrochemical properties resulting from the dispersion of glycerol plasticizer. The electrochemical impedance spectroscopy (EIS) measurement for the highest inclusion of plasticizer revealed a conductivity of 2.25 × 10-3 S/cm. The electrical equivalent circuit (EEC) model has established the circuit elements for each electrolyte. The variation trend of dielectric constant and DC conductivity was matched and confirmed by the EIS data. The fourier transform infrared (FTIR) analysis displayed credible confirmation of polymers-ion-plasticizer interactions. The dielectric study is extra highlighted the conductivity behavior. The dielectric constant and loss (ε′ and ε″) quantities were reported to be high at low frequencies. On the other hand, the irregular shape of the imaginary part of modulus (M“) spectra denotes the non-Debye behaviors of relaxation. The ion transference number (tion) value for the maximum plasticized system is 0.944, where the ions are the primary components for the charge transfer process. Stability of the highest conducting sample is determined to be 1.6 V, using linear sweep voltammetry (LSV). |
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| Keywords: | Polymer blends Ammonium salt FTIR study EIS and EEC modeling TNM and LSV |
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