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Preliminary Study of Polyvinyl Alcohol (PVA) and Polyethylene Oxide (PEO) Composites as Material of Solid Polymer Electrolyte
Rakhmawati M. Putri (a), Octia Floweri (d), Tirta R. Mayangsari (b), Akfinny H. Aimon (a,c), Ferry Iskandar (a*,c,d)

a) Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia
*) ferry[at]fi.itb.ac.id
b) Department of Chemistry, Universitas Pertamina, Jalan Teuku Nyak Arief, Simprug, Jakarta 12220, Indonesia
c) National Center for Sustainable Transportation Technologi, Istitut Tekniologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
d) Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia


Abstract

Polyethylene oxide (PEO) is a polymeric material that has been widely used as solid polymer electrolytes (SPEs) for all-solid lithium ion battery (LIB) due to its excellent chemical stability. However, its low ionic conductivity at room temperature can be a significant problem that hampers the performance of the LIBs. Polyvinyl alcohol (PVA), due to its amorphous structure, is one of the polymers that is expected to improve the ionic conductivity of SPEs. In this study, we added polyvinyl alcohol (PVA) as a composite polymer to PEO based SPEs, with a varied amount of LiOH. The homogeneous solution was cast to form a thin and transparent SPE membrane. Characterization by X-Ray Diffraction (XRD) revealed the semi-crystalline properties of all samples. Ionic conductivity of SPEs composites was determined through AC impedance measurement using Electrochemical Impedance Spectroscopy (EIS). Among all samples that were studied, the sample with 4 wt. % LiOH revealed the highest ionic conductivity that reached 2.18 × 10-5 S.cm-1 at room temperature.

Keywords: lithium ion batteries (LIBs), solid polymer electrolytes (SPEs), polyethylene oxide (PEO), polyvinyl alcohol (PVA)

Topic: Minerals and Complex Materials

Link: https://ifory.id/abstract/pf4Y9zCnkmTW

Conference: The 7th International Conference on Advanced Materials Science and Technology (ICAMST 2019)

Plain Format | Corresponding Author (Rakhmawati Muliana Putri)

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