Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau

Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau

Corn starch based polymer electrolytes with lithium perchlorate, (LiClO4), as dopand salt, silica (SiO2) and barium titanate (BaTiO3) as fillers were prepared using solution-casting technique. The prepared corn starch based polymer electrolytes were subjected to scanning electron microscopy (SEM), A...

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Main Author: Teoh, Kok Hau
Format: Thesis
Published: 2012
Subjects:
Q Science (General)
QC Physics
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spelling um-stud-41752014-09-26T01:24:25Z Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau Teoh, Kok Hau Q Science (General) QC Physics Corn starch based polymer electrolytes with lithium perchlorate, (LiClO4), as dopand salt, silica (SiO2) and barium titanate (BaTiO3) as fillers were prepared using solution-casting technique. The prepared corn starch based polymer electrolytes were subjected to scanning electron microscopy (SEM), A.C. impedance spectroscopy, differential scanning calorimetry (DSC), thermal gravimetry analysis (TGA), water solubility test, linear sweep voltammetry (LSV), cyclic voltammetry (CV), galvanostatic charge discharge and low frequency impedance spectroscopy. The addition of fillers alters the ionic conduction mechanism and structural properties of the polymer electrolytes. Ionic conductivity studies were carried out and it was found that the polymer electrolyte systems of corn starch:LiClO4 (60:40), corn starch-LiClO4:SiO2 (96:4) and corn starch-LiClO4:BaTiO3 (90:10) reaches the maximum ionic conductivity of 1.55 × 10-6 S cm-1, 1.23 × 10-4 S cm-1 and 1.84× 10-4 S cm-1, respectively. The addition of filler resulted in better heat resistivity, thermal stability and structural properties. The highest conducting polymer films from each system were used to fabricate electrical double layer capacitor (EDLC) cells. The fabricated cells show wide electrochemical stability windows ~2.7 V. Charge discharge profiles show the EDLCs fabricated have stable performance up to 500 cycles with 90 % efficiency. The highest specific capacitance obtained from the fabricated EDLC cells is 16.22 F g-1. Corn starch polymer electrolytes have shown promising results in EDLC application. 2012 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/4175/1/list_of_chapter.pdf application/pdf http://studentsrepo.um.edu.my/4175/2/thesis.pdf http://pendeta.um.edu.my/client/default/search/detailnonmodal/ent:$002f$002fSD_ILS$002f988$002fSD_ILS:988282/one?qu=Effect+of+doping+fillers+towards+corn+starch+based+green+polymer+electrolytes Teoh, Kok Hau (2012) Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/4175/
repository_type Digital Repository
institution_category Local University
institution University Malaya
building UM Students Repository
collection Online Access
topic Q Science (General)
QC Physics
spellingShingle Q Science (General)
QC Physics
Teoh, Kok Hau
Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau
description Corn starch based polymer electrolytes with lithium perchlorate, (LiClO4), as dopand salt, silica (SiO2) and barium titanate (BaTiO3) as fillers were prepared using solution-casting technique. The prepared corn starch based polymer electrolytes were subjected to scanning electron microscopy (SEM), A.C. impedance spectroscopy, differential scanning calorimetry (DSC), thermal gravimetry analysis (TGA), water solubility test, linear sweep voltammetry (LSV), cyclic voltammetry (CV), galvanostatic charge discharge and low frequency impedance spectroscopy. The addition of fillers alters the ionic conduction mechanism and structural properties of the polymer electrolytes. Ionic conductivity studies were carried out and it was found that the polymer electrolyte systems of corn starch:LiClO4 (60:40), corn starch-LiClO4:SiO2 (96:4) and corn starch-LiClO4:BaTiO3 (90:10) reaches the maximum ionic conductivity of 1.55 × 10-6 S cm-1, 1.23 × 10-4 S cm-1 and 1.84× 10-4 S cm-1, respectively. The addition of filler resulted in better heat resistivity, thermal stability and structural properties. The highest conducting polymer films from each system were used to fabricate electrical double layer capacitor (EDLC) cells. The fabricated cells show wide electrochemical stability windows ~2.7 V. Charge discharge profiles show the EDLCs fabricated have stable performance up to 500 cycles with 90 % efficiency. The highest specific capacitance obtained from the fabricated EDLC cells is 16.22 F g-1. Corn starch polymer electrolytes have shown promising results in EDLC application.
format Thesis
author Teoh, Kok Hau
author_facet Teoh, Kok Hau
author_sort Teoh, Kok Hau
title Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau
title_short Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau
title_full Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau
title_fullStr Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau
title_full_unstemmed Effect of doping fillers towards corn starch based green polymer electrolytes / Teoh Kok Hau
title_sort effect of doping fillers towards corn starch based green polymer electrolytes / teoh kok hau
publishDate 2012
url http://pendeta.um.edu.my/client/default/search/detailnonmodal/ent:$002f$002fSD_ILS$002f988$002fSD_ILS:988282/one?qu=Effect+of+doping+fillers+towards+corn+starch+based+green+polymer+electrolytes
http://pendeta.um.edu.my/client/default/search/detailnonmodal/ent:$002f$002fSD_ILS$002f988$002fSD_ILS:988282/one?qu=Effect+of+doping+fillers+towards+corn+starch+based+green+polymer+electrolytes
http://studentsrepo.um.edu.my/4175/1/list_of_chapter.pdf
http://studentsrepo.um.edu.my/4175/2/thesis.pdf
first_indexed 2018-09-06T08:04:54Z
last_indexed 2018-09-06T08:04:54Z
_version_ 1610844570323517440

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