Sains Malaysiana 38(4)(2009): 483–487 

 

 

Preparation and Characterization of PVC-Al2O3-LiClO4 Composite Polymeric Electrolyte

(Penyediaan dan Pencirian Komposit Polimer Elektrolit PVC- Al2O3-LiClO4)

 

Azizan Ahmad1,*, Mohd. Yusri Abdul Rahman2,

Siti Aminah Mohd Noor1 & Mohd Reduan Abu Bakar1

 

1Pusat Pengajian Sains Kimia dan Teknologi Makanan,

Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia,

43600 Bangi, Selangor D.E., Malaysia

 

2Mohd. Yusri Abdul Rahman

College of Engineering, Universiti Tenaga Nasional,

43009 Kajang, Selangor D.E., Malaysia

 

Received: 13 February 2008 / Accepted: 3 November 2008

 

 

ABSTRACT

 

Ionic conductivity of composite polymer electrolyte PVC-Al2O3-LiClO4 as a function of Al2O3 concentration has been studied. The electrolyte samples were prepared by solution casting technique. Their ionic conductivity was measured using impedance spectroscopy technique. It was observed that the conductivity of the electrolyte varies with Al2O3 concentration. The highest room temperature conductivity of the electrolyte of 3.43 × 10-10 S.cm-1 was obtain at 25% by weight of Al2O3and that without Al2O3 filler was found to be 2.43 × 10-11 S.cm-1. The glass transition temperature decreases with the increase of Al2O3 percentage due to the increasing amorphous state, meanwhile the degradation temperature increases with the increase of Al2O3 percentage. Both of these thermal properties influence the enhancement of the conductivity value. The morphology of the samples shows the even distribution of the Al2O3 filler in the samples. However, the filler starts to agglomerate in the sample when high percentage of Al2O3 is being used. Inconclusion, the addition of Al2O3 filler improves the ionic conductivity of PVC- Al2O3-LiCIO4 solid polymer electrolyte.

 

Keywords: inorganic filler; ionic conductivity; PVC; surface morphology

 

 

ABSTRAK

 

Kajian kesan kandungan pengisi Al2O3 terhadap kekonduksian komposit polimer elektrolit PVC- Al2O3-LiClO4 telah dikaji. Sampel disediakan menggunakan teknik pengacunan larutan. Kekonduksian ion diukur dengan menggunakan spektroskopi impedans. Didapati kekonduksian ion pada suhu bilik yang tertinggi adalah 3.43 × 10-10 S.cm-1 pada 25% berat Al2O3 berbanding dengan kekonduksian ion tanpa pengisi hanya 2.43 × 10-11 S.cm-1. Suhu peralihan kaca sampel menurun dengan meningkatnya peratus kandungan pengisi disebabkan oleh peningkatan fasa amorfus manakala suhu degradasi pula meningkat dengan meningkatnya peratus pengisi. Morfologi sampel menunjukkan pengisi tertabur secara sekata namun demikian ia cenderung membentuk aglomerasi pada peratus pengisi yang tinggi. Kesimpulannya penambahan pengisi Al2O3 dapat meningkatkan kekonduksian ion pepejal polimer elektrolit PVC Al2O3-LiClO4.

 

Kata kunci: kekonduksian ionik; morfologi permukaan; PVC; pengisi tak organik

 

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*Corresponding author; email: azizan@ukm.my

 

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