Development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / Muhamad Hafiz Hamsan
In the current work, the preparation of the polymer electrolyte (PE) systems consists of methylcellulose-potato starch polymer matrix, ammonium nitrate (NH4NO3) as ionic source and glycerol as plasticizer are done by solution cast technique. X-ray diffraction (XRD) has shown that blend with 60 wt...
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| Format: | Thesis |
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2020
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| Online Access: | http://studentsrepo.um.edu.my/12228/ http://studentsrepo.um.edu.my/12228/2/Muhamad_Hafiz.pdf http://studentsrepo.um.edu.my/12228/1/Muhamad_Hafiz.pdf |
| _version_ | 1848774600675033088 |
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| author | Muhamad Hafiz , Hamsan |
| author_facet | Muhamad Hafiz , Hamsan |
| author_sort | Muhamad Hafiz , Hamsan |
| building | UM Research Repository |
| collection | Online Access |
| description | In the current work, the preparation of the polymer electrolyte (PE) systems consists of
methylcellulose-potato starch polymer matrix, ammonium nitrate (NH4NO3) as ionic
source and glycerol as plasticizer are done by solution cast technique. X-ray diffraction
(XRD) has shown that blend with 60 wt.% methylcellulose and 40 wt.% potato starch
possesses the lowest degree of crystallinity. The possible interactions within the PE are
verified using Fourier transform infrared (FTIR) spectroscopy. As the concentration of
NH4NO3 is at 30 wt.%, the conductivity is optimized up to (4.37 ± 0.16) × 10-5 S cm-1
and then maximized to (1.26 ± 0.1) × 10−3 S cm−1 with the assist of 40 wt.% glycerol.
The conductivity is found to be affected by the ionic mobility (), diffusivity (D) and
number density (n). The addition of glycerol has changed the conductivity-temperature
relation from Arrhenius to Vogel-Fulcher-Tammann rule. PE in this work is discovered
to obey the non-Debye behavior via dielectric study. From transference number
measurement (TNM), ions are considered as the dominant charge carrier and the cation
transference number (tc) for the highest conducting electrolyte (C4) is 0.40.
Thermogravimetric analysis (TGA) portrays thermal stability up to 150 C for the
plasticized electrolyte. XRD, differential scanning calorimetry (DSC) and field emission
scanning electron microscopy (FESEM) have strengthened the conductivity patterns. C4
is electrochemically stable up to 1.88 V. Galvanostatic charge-discharge measurement
of the EDLC has been supported with cyclic voltammetry (CV) analysis. The protonic
cells are discharged at various temperatures and constant currents. The rechargeability
has been tested at 1 and 4 mA for 15 cycles.
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| first_indexed | 2025-11-14T14:00:53Z |
| format | Thesis |
| id | um-12228 |
| institution | University Malaya |
| institution_category | Local University |
| last_indexed | 2025-11-14T14:00:53Z |
| publishDate | 2020 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | um-122282023-01-17T23:57:11Z Development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / Muhamad Hafiz Hamsan Muhamad Hafiz , Hamsan Q Science (General) QC Physics In the current work, the preparation of the polymer electrolyte (PE) systems consists of methylcellulose-potato starch polymer matrix, ammonium nitrate (NH4NO3) as ionic source and glycerol as plasticizer are done by solution cast technique. X-ray diffraction (XRD) has shown that blend with 60 wt.% methylcellulose and 40 wt.% potato starch possesses the lowest degree of crystallinity. The possible interactions within the PE are verified using Fourier transform infrared (FTIR) spectroscopy. As the concentration of NH4NO3 is at 30 wt.%, the conductivity is optimized up to (4.37 ± 0.16) × 10-5 S cm-1 and then maximized to (1.26 ± 0.1) × 10−3 S cm−1 with the assist of 40 wt.% glycerol. The conductivity is found to be affected by the ionic mobility (), diffusivity (D) and number density (n). The addition of glycerol has changed the conductivity-temperature relation from Arrhenius to Vogel-Fulcher-Tammann rule. PE in this work is discovered to obey the non-Debye behavior via dielectric study. From transference number measurement (TNM), ions are considered as the dominant charge carrier and the cation transference number (tc) for the highest conducting electrolyte (C4) is 0.40. Thermogravimetric analysis (TGA) portrays thermal stability up to 150 C for the plasticized electrolyte. XRD, differential scanning calorimetry (DSC) and field emission scanning electron microscopy (FESEM) have strengthened the conductivity patterns. C4 is electrochemically stable up to 1.88 V. Galvanostatic charge-discharge measurement of the EDLC has been supported with cyclic voltammetry (CV) analysis. The protonic cells are discharged at various temperatures and constant currents. The rechargeability has been tested at 1 and 4 mA for 15 cycles. 2020-08 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/12228/2/Muhamad_Hafiz.pdf application/pdf http://studentsrepo.um.edu.my/12228/1/Muhamad_Hafiz.pdf Muhamad Hafiz , Hamsan (2020) Development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / Muhamad Hafiz Hamsan. PhD thesis, Universiti Malaya. http://studentsrepo.um.edu.my/12228/ |
| spellingShingle | Q Science (General) QC Physics Muhamad Hafiz , Hamsan Development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / Muhamad Hafiz Hamsan |
| title | Development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / Muhamad Hafiz Hamsan |
| title_full | Development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / Muhamad Hafiz Hamsan |
| title_fullStr | Development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / Muhamad Hafiz Hamsan |
| title_full_unstemmed | Development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / Muhamad Hafiz Hamsan |
| title_short | Development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / Muhamad Hafiz Hamsan |
| title_sort | development of plasticized methylcellulosepotato starch blend based polymer electrolytes for protonic cell and supercapacitor applications / muhamad hafiz hamsan |
| topic | Q Science (General) QC Physics |
| url | http://studentsrepo.um.edu.my/12228/ http://studentsrepo.um.edu.my/12228/2/Muhamad_Hafiz.pdf http://studentsrepo.um.edu.my/12228/1/Muhamad_Hafiz.pdf |