Silicon Dioxide filled Polymethyl methacrylate / 50% epoxidized natural rubber with propylene
carbonate electrolyte
NAMEMUHAMMAD HAKIM BIN HALIM
NAME OF SUPERVISORSHARIL FADLI MOHAMAD ZAMRI
INTRODUCTION PMMA as the polymer host, because of the existence of the carbonyl (C=O) and methoxy (-O-CH3) group, providing site for coordinative bond allowing ion hoping, Unfortunately, PMMA is brittle and hard
Resulting in low chain mobility which is not suitable for ion hoping mechanism . Hence ENR 50 will be add to provide extra flexibility and soften it to enhance the ion hoping mechanism
But, the PMMA/ENR 50 blend are not homogenous, hence phase separation are formed, phase separation are not desirable as it can reduce the efficiency of the ion hoping mechanism
Thus SiO2 is added to reduce phase separation, but SiO2 tend to agglomerate when mixed with the polymer blend
While PC added to improve ionic conductivity and the effects of its addition were studied
PC
Problem Statement
1.PMMA/ENR 50/SiO2 electrolyte system is agglomerated
2.Ionic conductivity of PMMA/ENR 50/SiO2+ is low
Significance of Study
1. To investigate the effect of PC on the agglomeration in PMMA/ENR 50/ SiO2 electrolyte system
2. To improved the ionic conductivity of PMMA/ENR 50/ SiO2 electrolyte system with the addition of PC
Objective of Study
Contribute to new knowledge on preparation of polymer electrolytes with improved physical and electrochemical properties.
LITERATURE REVIEWResearch by Finding
(Hu et al., 2006) and (Su'ait et al., 2009)
PMMA membrane was brittle and has poor mechanicalProperties, hence PMMA cannot be use directly as polymer electrolyte
(Aurbach, 1999)
PC possesses outstandingly high dielectric constant of 64. PC usually used as high-permittivity component of electrolytes in lithium batteries
(Kuila et all, 2007)
Addition of PC into the polymer electrolyte system found to lowered the glass transition temperature and improved ionic conductivity
MATERIALS AND METHOD
RESULT & DISCUSSION: FTIR
% T
rans
mitt
ance
Wavenumber cm-1
RESULT & DISCUSSION: FTIR
% T
rans
mitt
ance
Wavenumber cm-1
RESULT & DISCUSSION: TGA
RESULT & DISCUSSION: OM
PMMA + ENR 50 + SiO2 + PC
PMMA + ENR 50 + SiO2 + PC + LIBF4
PMMA + ENR 50 + SiO2 + LiBF4
PMMA + ENR 50 + SiO2
RESULT & DISCUSSION: DSC
Polymer film Glass Transition Temperature, Tg (°C)
Tg1
Tg2
Tg3
PMMA/ENR 50
with SiO2
40.833 93.000 106.833
PMMA/ENR 50
with SiO2 and
PC
39.833 90.666 105.666
RESULT & DISCUSSION: DSC
RESULT & DISCUSSION: EIS
PCWithoutPC
CONCLUSION • FTIR,TGA,OM,DSC AND EIS were
successfully used in the study of the thermal, morphology, and conductivity of the PMMA/ENR 50/SiO2 polymer electrolyte
• PC found to improved ionic conductivity up to 30%
RECOMMENDATION• Based on this study, it can be
interesting to see how different amount of PC added will affect the ionic conductivity of the polymer electrolyte, whether the more is better or there is a limited amount of PC can be used to improve ionic conductivity of the polymer electrolyte
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• Xu, T., Jia, Z., Luo, Y., Jia, D., & Peng, Z. (2015). Interfacial interaction between the epoxidized natural rubber and silica in natural rubber/silica composites. Applied Surface Science, 328, 306-313. doi: 10.1016/j.apsusc.2014.12.029
• Zhu, N., Liu, W., Xue, M., Xie, Z., Zhao, D., Zhang, M., . . . Cao, T. (2010). Graphene as a conductive additive to enhance the high-rate capabilities of electrospun Li4Ti5O12 for lithium-ion batteries. Electrochimica Acta, 55(20), 5813-5818. doi: 10.1016/j.electacta.2010.05.029
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