Analisis Pengaruh Ionic Radii pada Garam terhadap Konduktivitas Ionik Solid Polymer Electrolyte (SPE) Berbasis Polyvinyl Alcohol (PVA)

Sabita, Husna (2024) Analisis Pengaruh Ionic Radii pada Garam terhadap Konduktivitas Ionik Solid Polymer Electrolyte (SPE) Berbasis Polyvinyl Alcohol (PVA). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Solid Polymer Electrolyte (SPE) merupakan alternatif yang dapat digunakan untuk menggantikan elektrolit cair karena memiliki tingkat keamanan yang lebih baik. Penelitian ini dilakukan dengan menyintesis SPE berbasis Polyvinyl Alcohol (PVA) menggunakan teknik solution casting disertai penambahan garam Cerium Nitrate (1,196 Å), Indium Nitrate (0,8 Å), dan Gallium Nitrate (0,62 Å) yang memiliki ukuran ionic radii berbeda. Tujuan dari penelitian ini untuk menganalisis pengaruh ionic radii garam terhadap konduktivitas ionik dan karakteristik SPE. Berdasarkan hasil X-Ray Diffraction (XRD) menunjukkan bahwa sampel dengan ukuran ionic radii garam lebih kecil memiliki struktur yang lebih amorf. Hasil Fourier Transform Infrared Spectroscopy (FTIR) menyatakan adanya pergeseran gugus fungsi dan peningkatan gugus C–O–H yang membantu lebih banyak ion garam berikatan hidrogen dengan PVA akibat penambahan garam. Hasil Scanning Electron Microscope (SEM) diperoleh sampel dengan permukaan yang lebih kasar, struktur matriks polimer yang tidak teratur, dan peningkatan surface area setelah penambahan garam. Struktur amorf kembali dibuktikan melalui hasil uji Differential Scanning Calorimetry (DSC), dimana diperoleh nilai titik leleh (Tm) dan glass transition (Tg) yang semakin rendah setelah penambahan garam. Hasil Electrochemical Impedance Spectroscopy (EIS) menunjukkan semakin kecil ukuran ionic radii garam maka konduktivitas ionik SPE semakin meningkat. Pada konsentrasi 10 wt.%, nilai konduktivitas ionik SPE dengan penambahan Cerium Nitrate (1,196 Å), Indium Nitrate (0,8 Å), dan Gallium Nitrate (0,62 Å) secara berurutan, yaitu 1,44 x 10^-4 S/cm; 1,56 x 10^-4 S/cm; dan 1,72 x 10^-4 S/cm. Hasil konduktivitas ionik yang dihasilkan pada penelitian ini sebanding dengan nilai konduktivitas ionik elektrolit cair (10^-4 ~ 10^-2 S/cm) sehingga dapat diaplikasikan pada baterai.
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Solid Polymer Electrolyte (SPE) is a viable alternative to liquid electrolytes due to its enhanced safety features. This research involves synthesizing Polyvinyl Alcohol (PVA)-based SPE using the solution casting technique, with the addition of Cerium Nitrate (1,196 Å), Indium Nitrate (0,8 Å), and Gallium Nitrate (0,62 Å), which have different ionic radii. The objective of this study is to analyze the effect of the ionic radii of salts on the ionic conductivity and characteristics of SPE. According to the X-Ray Diffraction (XRD) results, samples with smaller ionic radii salts exhibited a more amorphous structure. Fourier Transform Infrared Spectroscopy (FTIR) results indicated a shift in functional groups and an increase in C-O-H groups, facilitating more salt ions to form hydrogen bonds with PVA due to the addition of salts. Scanning Electron Microscope (SEM) results showed samples with rougher surfaces, irregular polymer matrix structures, and increased surface area after salt addition. The amorphous structure was further confirmed by Differential Scanning Calorimetry (DSC) results, which showed lower melting (Tm) and glass transition (Tg) temperatures after salt addition. Electrochemical Impedance Spectroscopy (EIS) results indicated that smaller ionic radii salts lead to higher ionic conductivity in SPE. At a concentration of 10 wt.%, the ionic conductivity of SPE with the addition of Cerium Nitrate (1,196 Å), Indium Nitrate (0,8 Å), and Gallium Nitrate (0,62 Å) was 1,44 x 10^-4 S/cm, 1,56 x 10^-4 S/cm, and 1,72 x 10^-4 S/cm, respectively. The ionic conductivity results obtained in this study are comparable to those of liquid electrolytes (10^-4 ~ 10^-2 S/cm), making them suitable for battery applications.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	ionic radii, ionic conductivity, polyvinyl alcohol, solid polymer electrolyte, ionic radii, konduktivitas ionik, polyvinyl alcohol, solid polymer electrolyte
Subjects:	Q Science > QC Physics > QC173.4.C63 Composite materials Q Science > QC Physics > QC610.3 Electric conductivity Q Science > QD Chemistry > QD115 Electrochemical analysis T Technology > TP Chemical technology > TP1140 Polymers
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Husna Sabita
Date Deposited:	26 Jul 2024 00:29
Last Modified:	26 Jul 2024 00:29
URI:	http://repository.its.ac.id/id/eprint/108917

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