A Study of Methylcellulose Based Polymer Electrolyte Impregnated with Potassium Ion Conducting Carrier: Impedance, EEC Modeling, FTIR, Dielectric, and Device Characteristics
In this research, a biopolymer-based electrolyte system involving methylcellulose (MC) as a host polymeric material and potassium iodide (KI) salt as the ionic source was prepared by solution cast technique. The electrolyte with the highest conductivity was used for device application of electrochem...
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2021-08-01
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| author | Muaffaq M. Nofal Jihad M. Hadi Shujahadeen B. Aziz Mohamad A. Brza Ahmad S. F. M. Asnawi Elham M. A. Dannoun Aziz M. Abdullah Mohd F. Z. Kadir |
| author_facet | Muaffaq M. Nofal Jihad M. Hadi Shujahadeen B. Aziz Mohamad A. Brza Ahmad S. F. M. Asnawi Elham M. A. Dannoun Aziz M. Abdullah Mohd F. Z. Kadir |
| author_sort | Muaffaq M. Nofal |
| collection | DOAJ |
| description | In this research, a biopolymer-based electrolyte system involving methylcellulose (MC) as a host polymeric material and potassium iodide (KI) salt as the ionic source was prepared by solution cast technique. The electrolyte with the highest conductivity was used for device application of electrochemical double-layer capacitor (EDLC) with high specific capacitance. The electrical, structural, and electrochemical characteristics of the electrolyte systems were investigated using various techniques. According to electrochemical impedance spectroscopy (EIS), the bulk resistance (<i>R<sub>b</sub></i>) decreased from 3.3 × 10<sup>5</sup> to 8 × 10<sup>2</sup> Ω with the increase of salt concentration from 10 wt % to 40 wt % and the ionic conductivity was found to be 1.93 ×10<sup>−5</sup> S/cm. The dielectric analysis further verified the conductivity trends. Low-frequency regions showed high dielectric constant, <i>ε</i>′ and loss, <i>ε</i>″ values. The polymer-salt complexation between (MC) and (KI) was shown through a Fourier transformed infrared spectroscopy (FTIR) studies. The analysis of transference number measurement (TNM) supported ions were predominantly responsible for the transport process in the MC-KI electrolyte. The highest conducting sample was observed to be electrochemically constant as the potential was swept linearly up to 1.8 V using linear sweep voltammetry (LSV). The cyclic voltammetry (CV) profile reveals the absence of a redox peak, indicating the presence of a charge double-layer between the surface of activated carbon electrodes and electrolytes. The maximum specific capacitance, <i>C<sub>s</sub></i> value was obtained as 118.4 F/g at the sweep rate of 10 mV/s. |
| first_indexed | 2024-03-10T08:08:38Z |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T08:08:38Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-3a7f36befad049139c6483efc365f6232023-11-22T10:52:46ZengMDPI AGMaterials1996-19442021-08-011417485910.3390/ma14174859A Study of Methylcellulose Based Polymer Electrolyte Impregnated with Potassium Ion Conducting Carrier: Impedance, EEC Modeling, FTIR, Dielectric, and Device CharacteristicsMuaffaq M. Nofal0Jihad M. Hadi1Shujahadeen B. Aziz2Mohamad A. Brza3Ahmad S. F. M. Asnawi4Elham M. A. Dannoun5Aziz M. Abdullah6Mohd F. Z. Kadir7Department of Mathematics and General Sciences, Prince Sultan University, P.O. Box 66833, Riyadh 11586, Saudi ArabiaDepartment of Medical Laboratory of Science, College of Health Sciences, University of Human Development, Sulaimaniyah 46001, IraqHameed Majid Advanced Polymeric Materials Research Laboratory, Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Sulaimaniyah 46001, IraqHameed Majid Advanced Polymeric Materials Research Laboratory, Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Sulaimaniyah 46001, IraqChemical Engineering Section, Malaysian Institute of Chemical & Bioengineering Technology (UniKL MICET), University Kuala Lumpur, Alor Gajah 78000, MalaysiaGeneral Science Department, Woman Campus, Prince Sultan University, P.O. Box 66833, Riyadh 11586, Saudi ArabiaDepartment of Applied Physics, College of Medical and Applied Sciences, Charmo University, Peshawa Street, Chamchamal 46023, IraqCentre for Foundation Studies in Science, University of Malaya, Kuala Lumpur 50603, MalaysiaIn this research, a biopolymer-based electrolyte system involving methylcellulose (MC) as a host polymeric material and potassium iodide (KI) salt as the ionic source was prepared by solution cast technique. The electrolyte with the highest conductivity was used for device application of electrochemical double-layer capacitor (EDLC) with high specific capacitance. The electrical, structural, and electrochemical characteristics of the electrolyte systems were investigated using various techniques. According to electrochemical impedance spectroscopy (EIS), the bulk resistance (<i>R<sub>b</sub></i>) decreased from 3.3 × 10<sup>5</sup> to 8 × 10<sup>2</sup> Ω with the increase of salt concentration from 10 wt % to 40 wt % and the ionic conductivity was found to be 1.93 ×10<sup>−5</sup> S/cm. The dielectric analysis further verified the conductivity trends. Low-frequency regions showed high dielectric constant, <i>ε</i>′ and loss, <i>ε</i>″ values. The polymer-salt complexation between (MC) and (KI) was shown through a Fourier transformed infrared spectroscopy (FTIR) studies. The analysis of transference number measurement (TNM) supported ions were predominantly responsible for the transport process in the MC-KI electrolyte. The highest conducting sample was observed to be electrochemically constant as the potential was swept linearly up to 1.8 V using linear sweep voltammetry (LSV). The cyclic voltammetry (CV) profile reveals the absence of a redox peak, indicating the presence of a charge double-layer between the surface of activated carbon electrodes and electrolytes. The maximum specific capacitance, <i>C<sub>s</sub></i> value was obtained as 118.4 F/g at the sweep rate of 10 mV/s.https://www.mdpi.com/1996-1944/14/17/4859MC polymer electrolyteimpedance studyion transportftir analysisTNMLSV |
| spellingShingle | Muaffaq M. Nofal Jihad M. Hadi Shujahadeen B. Aziz Mohamad A. Brza Ahmad S. F. M. Asnawi Elham M. A. Dannoun Aziz M. Abdullah Mohd F. Z. Kadir A Study of Methylcellulose Based Polymer Electrolyte Impregnated with Potassium Ion Conducting Carrier: Impedance, EEC Modeling, FTIR, Dielectric, and Device Characteristics Materials MC polymer electrolyte impedance study ion transport ftir analysis TNM LSV |
| title | A Study of Methylcellulose Based Polymer Electrolyte Impregnated with Potassium Ion Conducting Carrier: Impedance, EEC Modeling, FTIR, Dielectric, and Device Characteristics |
| title_full | A Study of Methylcellulose Based Polymer Electrolyte Impregnated with Potassium Ion Conducting Carrier: Impedance, EEC Modeling, FTIR, Dielectric, and Device Characteristics |
| title_fullStr | A Study of Methylcellulose Based Polymer Electrolyte Impregnated with Potassium Ion Conducting Carrier: Impedance, EEC Modeling, FTIR, Dielectric, and Device Characteristics |
| title_full_unstemmed | A Study of Methylcellulose Based Polymer Electrolyte Impregnated with Potassium Ion Conducting Carrier: Impedance, EEC Modeling, FTIR, Dielectric, and Device Characteristics |
| title_short | A Study of Methylcellulose Based Polymer Electrolyte Impregnated with Potassium Ion Conducting Carrier: Impedance, EEC Modeling, FTIR, Dielectric, and Device Characteristics |
| title_sort | study of methylcellulose based polymer electrolyte impregnated with potassium ion conducting carrier impedance eec modeling ftir dielectric and device characteristics |
| topic | MC polymer electrolyte impedance study ion transport ftir analysis TNM LSV |
| url | https://www.mdpi.com/1996-1944/14/17/4859 |
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