Azmi, Rima Feisy (2022) Efek Suhu Kalsinasi Pada Pembentukan Fasa NaFePO4 dan Karakterisasinya Sebagai Elektroda Baterai Ion Na. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini bertujuan untuk menganalisis performa elektrokimia material katoda NaFePO4 akibat variasi suhu kalsinasi. Sintesis dilakukan dengan menggunakan metode sol-gel. Analisis X-Ray Diffractometer (XRD) menunjukkan fasa maricite NaFePO4 yang diikuti oleh munculnya fasa Na3Fe2(PO4)3 sebagai fasa sekunder. Fasa maricite NaFePO4 tertinggi dimiliki oleh sampel dengan suhu kalsinasi 650°C sebesar 82,1%. Pengamatan morfologi menggunakan SEM-EDX menunjukkan bentuk seperti terumbu karang dengan persebaran partikel merata dan tidak ditemukan unsur pengotor yang tidak diinginkan. Analisis pengujian CV didapatkan nilai kapasitansi spesifik dari masing-masing sampel. Nilai kapasitansi tertinggi dimiliki oleh sampel dengan suhu kalsinasi 650 °C sebesar 8,8x10-4 F/g. Pengujian EIS dilakukan untuk mengukur konduktivitas katoda baterai NaFePO4. Berdasarkan hasil analisis EIS diperoleh nilai konduktivitas listrik tertinggi dimiliki pada sampel dengan variasi suhu kalsinasi 550 °C senilai 4,7x10-3 Scm-1. Konduktivitas ionik tertinggi dimiliki oleh sampel yang dikalsinasi pada suhu 550°C dengan nilai 5,9x10-3 Scm-1
. Difusi ion tertinggi dimiliki oleh sampel yang dikalsinasi pada suhu 650 °C sebesar 2,3x10-10 cm2s-1. Pada penelitian ini menyimpulkan bahwa semakin tinggi suhu kalsinasi mengakibatkan difusi ion Na+ semakin meningkat dan semakin tinggi suhu kalsinasi mengakibatkan difusi ion Na+ semakin meningkat.
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This research aims to analyze the electrochemical performance of NaFePO4 cathode material due to variations in calcination temperature. The synthesis of samples is done using the sol-gel method. The X-ray diffractometer (XRD) analysis shows the maricite phase of NaFePO4 followed by the presence of the Na3Fe2(PO4)3 phase as a secondary phase. The highest phase of NaFePO4 maricite of 82.1% was achieved by the sample with the calcination temperature of 650°C. Morphological observations using SEM-EDX show the coral reef-like shaped particles with homogeneous distribution. Based on the results of the EDX analysis, no unwanted impurities were found. The CV testing has not indicated at the peak of reduction and oxidation in the sample, while instead obtained specific capacitance values from each sample. The highest capacitance was obtained by the sample with a calcination temperature of 650°C of 8.8x10-4 F/g. The EIS testing was conducted to measure the cathode conductivity of NaFePO4 batteries. The results of the
analysis showed the highest electrical conductivity of 4.7x10-3 Scm-1 and the highest ionic conductivity of 5.9x10-3 Scm-1 were achied by the possessed by the sample calcined at 550°C. Meanwhile, the highest ion diffusion of 2.3x10-10 cm2s-1 is belonging to the sample calcined at a temperature of 650°C.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | de-interkalasi, interkalasi, katoda baterai, NaFePO4. battery cathode, de-intercalation, intercalation, NaFePO4 |
| Subjects: | Q Science > QC Physics > QC 611.97.T46 Temperature effects. Including transition temperature |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45101-(S2) Master Thesis |
| Depositing User: | Rima Feisy Azmi |
| Date Deposited: | 12 Feb 2022 18:49 |
| Last Modified: | 31 Oct 2022 02:10 |
| URI: | http://repository.its.ac.id/id/eprint/93877 |
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