Bawono, Brama Sangfatih (2026) Studi Pengaruh Temperatur Pirolisis Terhadap Struktur Dan Aktivitas Elektrokatalitik Katalis PtCo/NC Berbasis ZIF-67/Karbon BP2000 Untuk Aplikasi PEMFC. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Proton Exchange Membrane Fuel Cell (PEMFC) merupakan teknologi konversi energi yang memiliki efisiensi tinggi dan emisi rendah. Namun, penerapannya masih terkendala oleh lambatnya kinetika oxygen reduction reaction (ORR) pada katoda serta tingginya biaya penggunaan katalis berbasis platinum. Penelitian ini bertujuan untuk menganalisis pengaruh temperatur pirolisis terhadap struktur, morfologi, aktivitas elektrokatalitik, dan performa single cell katalis PtCo/NC berbasis ZIF-67/Karbon BP2000 untuk aplikasi PEMFC. Katalis disintesis menggunakan metode solvotermal yang dilanjutkan dengan pirolisis pada temperatur 600, 700, 800, dan 900 °C dalam atmosfer nitrogen. Karakterisasi dilakukan menggunakan XRD, FTIR, dan SEM-EDX, sedangkan aktivitas elektrokatalitik dievaluasi melalui CV, LSV, dan pengujian single cell. Hasil XRD menunjukkan terbentuknya fase paduan CoPt pada seluruh sampel, disertai penurunan d-spacing dan peningkatan ukuran kristalit seiring meningkatnya temperatur pirolisis. Hasil CV menunjukkan bahwa sampel HT-600 memiliki nilai electrochemical surface area (ECSA) tertinggi sebesar 60,9 m² gPt⁻¹, sedangkan hasil LSV menunjukkan bahwa sampel HT-800 memiliki aktivitas ORR terbaik berdasarkan kombinasi nilai onset potential, mass activity, specific activity, dan electron transfer number sebesar 3,99 yang mendekati jalur empat elektron. Pengujian single cell menunjukkan bahwa katalis HT-800 mampu menghasilkan daya listrik, namun performanya masih lebih rendah dibandingkan katalis Pt/C komersial. Secara keseluruhan, temperatur pirolisis 800 °C memberikan keseimbangan terbaik antara karakteristik struktur dan aktivitas elektrokatalitik katalis PtCo/NC berbasis ZIF-67/Karbon BP2000.
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Proton Exchange Membrane Fuel Cells (PEMFCs) are promising energy conversion devices due to their high efficiency and low emissions. However, their commercialization is still limited by the sluggish kinetics of the oxygen reduction reaction (ORR) at the cathode and the high cost of platinum-based catalysts. This study aimed to investigate the effect of pyrolysis temperature on the structural characteristics, morphology, electrocatalytic activity, and single-cell performance of PtCo/NC catalysts derived from ZIF-67 and BP2000 carbon for PEMFC applications. The catalysts were synthesized using a solvothermal method followed by pyrolysis at 600, 700, 800, and 900 °C under a nitrogen atmosphere. Structural and morphological characterizations were carried out using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM–EDX). The electrocatalytic performance was evaluated through cyclic voltammetry (CV), linear sweep voltammetry (LSV), and single-cell testing. XRD analysis confirmed the formation of the CoPt alloy phase in all samples, accompanied by a decrease in d-spacing and an increase in crystallite size with increasing pyrolysis temperature. CV results revealed that HT-600 exhibited the highest electrochemical surface area (ECSA) of 60.9 m² gPt⁻¹, whereas LSV results indicated that HT-800 achieved the best ORR performance, exhibiting superior onset potential, mass activity, specific activity, and an electron transfer number of 3.99, indicating a dominant four-electron reduction pathway. Single-cell testing demonstrated that the HT-800 catalyst was capable of generating electrical power, although its performance remained lower than that of commercial Pt/C. Overall, a pyrolysis temperature of 800 °C provided the optimum balance between structural characteristics and electrocatalytic activity for the synthesized PtCo/NC catalyst.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | PEMFC, PtCo/NC, Temperatur Pirolisis, ZIF-67 PEMFC, PtCo/NC, Pyrolysis Temperature, ZIF-67 |
| Subjects: | Q Science > QD Chemistry > QD1 Oxidation-reduction reaction. Q Science > QD Chemistry > QD115 Electrochemical analysis Q Science > QD Chemistry > QD501 Catalysis. Catalysts. Q Science > QD Chemistry > QD569 Electrocatalysis. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2931 Fuel cells T Technology > TP Chemical technology > TP159.M6 Zeolites T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial. |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Brama Sangfatih Bawono |
| Date Deposited: | 24 Jul 2026 07:12 |
| Last Modified: | 24 Jul 2026 07:12 |
| URI: | http://repository.its.ac.id/id/eprint/137283 |
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