Pengaruh Suhu Kalsinasi Pada Pembentukan Fasa Dan Performa Elektrokimia Material Katoda Baterai NaFePO4

Azhar, Mohammad Arrafi (2022) Pengaruh Suhu Kalsinasi Pada Pembentukan Fasa Dan Performa Elektrokimia Material Katoda Baterai NaFePO4. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh suhu kalsinasi pada pembentukan fasa NaFePO4 dan hasil uji elektrokimianya. Material katoda NaFePO4 telah disintesis menggunakan metode sol-gel. Untuk mengetahui fasa NaFePO4 yang terbentuk, dilakukan pengujian X-Ray Diffraction (XRD) yang kemudian dianalisis menggunakan metode kualitatif dan kuantitatif. Digunakan software Origin 2018 untuk analisis kualitatif dengan mencocokkan puncak-puncak yang muncul antara hasil eksperimen dan referensi. Didapatkan hasil bahwa mayoritas puncak sudah sesuai dengan referensi. Digunakan juga analisis kuantitatif menggunakan software MAUD untuk mengetahui persentase fasa yang didapatkan. Selain fasa maricite-NaFePO4, fasa Na3Fe2(PO4)3 juga disertakan dalam analisis dikarenakan fasa tersebut merupakan fasa sekunder yang kemungkinan bisa muncul. Fasa maricite-NaFePO4 paling tinggi didapati pada sampel dengan variasi suhu kalsinasi 600°C dengan waktu tahan 10 jam, yaitu sebesar 80,44%. Sampel dengan variasi tertinggi dilanjutkan dengan pengujian Scanning Electron Microscope-Energy Dispersive X-ray (SEM-EDX) untuk menganalisis morfologi dan ukuran partikel. Hasilnya terlihat bentuk partikel seperti bunga karang dan didapatkan rata-rata ukuran partikelnya, yaitu sebesar 1,281 μm. Dilakukan juga pengujian Cyclic Voltammetry (CV) dan Electrical Impedance Spectroscopy (EIS) untuk mengetahui performa elektrokimia dari material katoda yang berhasil disintesis. Untuk analisis data CV dilakukan untuk mengetahui nilai kapasitas spesifik dari masing-masing sampel. Dari hasil yang telah didapatkan diketahui bahwa semakin rendah suhu kalsinasi maka semakin besar kapasitas spesifiknya. Pada penelitian ini didapatkan kapasitas spesifik tertinggi terdapat pada variasi 550°C dengan waktu tahan 10 jam, yaitu sebesar 3,8×10-3 F/g. Dari hasil EIS didapatkan bahwa semakin rendah suhu kalsinasi maka semakin tinggi konduktivitas listrik dan ionik. Konduktivitas listrik dan ionik tertinggi didapati pada variasi suhu kalsinasi 550°C dengan waktu tahan 10 jam. Selain itu juga dilakukan analisis difusi ion Na+ dari masing-masing sampel dan diketahui bahwa difusi ion Na+ tertinggi terdapat pada variasi suhu kalsinasi 600°C dengan waktu tahan 10 jam dengan nilai sebesar 1,43×10-12 cm2 s-1.
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This research aims to analyze the effect of calcination temperature on the formation of NaFePO4 phase and its electrochemical performance. NaFePO4 cathode material was succesfully syntezied by sol-gel method. X-Ray Diffraction (XRD) test was performed to know the formation phase of NaFePO4, and then the test results were analyzed by qualitative and quantitave method. The Origin 2018 Software was used to analyzed XRD patterns. Qualitative analysis is an analysis by comparing the peaks that appear between the experimental results and the reference. From the qualitative analysis, it is known that the majority of the peaks are matching with the reference. While, quantitative analysis is an analysis by using software MAUD to know how much phase percentage were formed. Beside the maricite-NaFePO4 phase, the Na3Fe2(PO4)3 phase also was included in the analysis because this phase is the secondary phase that probably appears. The highest percentage of maricite-NaFePO4 was found in sample with the calcination temperature of 600°C and holding time of 10 hours, which was 80.44%. Then this sampel was examined using Scanning Electron Microscope-Energy Dispersive X-ray (SEM-EDX) test to know the mophology and the average value of its particle length. It is known that the morphology of particles look like a sponges and the average value of its particle length is 1.281 μm. Cyclic Voltammetry (CV) dan Electrical Impedance Spectroscopy (EIS) tests were also carried out to determine the electrochemical performance of the cathode material that was successfully synthesized. CV test was carried out to determine the specific capacity value of each sample. From the test results, it is known that the lower the calcination temperature, the greater the specific capacity. In this study, the highest specific capacity was found at a sample with a calcination temperature of 550°C and a holding time of 10 hours, which was 3.8×10-3 F/g. From the EIS results, it was found that the lower the calcination temperature, the higher the electrical and ionic conductivity. The highest electrical and ionic conductivity was found at the calcination temperature variation of 550°C with a holding time of 10 hours. In addition, an analysis of the diffusion of Na+ ions from each sample was also carried out and it was found that the highest Na+ ion diffusion was obtained at the calcination temperature of 600°C with a holding time of 10 hours with a value of 1.43×10-12 cm2 s-1.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Elektrokimia, Katoda, Maricite, NaFePO4, Cathode, Electrochemical, Maricite, NaFePO4
Subjects:	Q Science > QD Chemistry > QD115 Electrochemical analysis
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	15 Dec 2025 07:47
Last Modified:	15 Dec 2025 07:47
URI:	http://repository.its.ac.id/id/eprint/128980

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