Pengaruh Variasi Rasio ZIF-67:BP2000 Dan Penambahan Glukosa Terhadap Aktivitas Elektrokatalitik Katalis PtCo/NC Untuk Aplikasi PEMFC

Candraningtyas, Asia (2026) Pengaruh Variasi Rasio ZIF-67:BP2000 Dan Penambahan Glukosa Terhadap Aktivitas Elektrokatalitik Katalis PtCo/NC Untuk Aplikasi PEMFC. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Proton Exchange Membrane Fuel Cell (PEMFC) merupakan salah satu teknologi konversi energi yang menjanjikan, namun performanya masih dibatasi oleh lambatnya Oxygen Reduction Reaction (ORR) pada sisi katoda serta tingginya penggunaan katalis berbasis platinum (Pt). Penelitian ini bertujuan untuk menganalisis pengaruh variasi rasio ZIF67:BP2000 dan penambahan glukosa terhadap karakteristik material serta aktivitas elektrokatalitik katalis PtCo/NC untuk aplikasi PEMFC. Katalis disintesis menggunakan metode solvotermal yang dilanjutkan dengan proses pirolisis. Dimana material support disintesis menggunakan ZIF-67 dan BP2000 dengan variasi rasio 1:3:1, 1:2:2, dan 1:1:3, kemudian dilakukan penambahan glukosa sebesar 5, 10, dan 15 wt% pada variasi 1:3:1. Karakterisasi dilakukan menggunakan Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), dan X-Ray Diffraction (XRD), sedangkan performa elektrokimia dievaluasi menggunakan Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), serta pengujian single cell PEMFC. Hasil penelitian menunjukkan bahwa variasi rasio ZIF-67:BP2000 dan penambahan glukosa tidak mengubah fase kristal utama CoPt berstruktur face-centered cubic (fcc), tetapi memengaruhi karakteristik morfologi dan gugus fungsi permukaan material. Adapun penambahan glukosa menghasilkan pita serapan C–H pada bilangan gelombang 2908 dan 2858 cm⁻¹ yang mengindikasikan terbentuknya karbon tambahan pada material hasil pirolisis. Berdasarkan pengujian elektrokimia, sampel PtCo/NC-1:1:3 menunjukkan aktivitas ORR yang optimal pada variasi tanpa glukosa, sedangkan sampel PtCo/NC-Glu5 memberikan performa terbaik pada variasi dengan glukosa dengan half-wave potential sebesar 0,75 V, mass activity sebesar 61,46 mA mgPt −1 dan specific activity sebesar 0,59 mA cm⁻². Pengujian single cell menunjukkan bahwa katalis PtCo/NC mampu beroperasi sebagai katalis katoda PEMFC, meskipun performanya masih berada di bawah kemampuan katalis Pt/C komersial. Penelitian ini menunjukkan bahwa optimasi rasio ZIF-67:BP2000 serta penambahan glukosa dalam jumlah optimum mampu meningkatkan aktivitas elektrokatalitik katalis PtCo/NC.
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Proton Exchange Membrane Fuel Cells (PEMFCs) are one of the most promising energy conversion technologies; however, their performance is still limited by the sluggish oxygen reduction reaction (ORR) at the cathode and the high utilization of platinum (Pt)-based catalysts. This study aims to investigate the effects of ZIF-67:BP2000 ratio variation and glucose addition on the structural characteristics and electrocatalytic activity of PtCo/NC catalysts for PEMFC applications. The catalysts were synthesized via a solvothermal method followed by a pyrolysis process. The catalyst support was prepared using ZIF-67 and BP2000 with mass ratios of 1:3:1, 1:2:2, and 1:1:3, while glucose was added at 5, 10, and 15 wt% to the 1:3:1 composition. Structural characterization was conducted using Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and X-ray Diffraction (XRD), whereas the electrochemical performance was evaluated using Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), and single-cell PEMFC testing. The results showed that the variation in the ZIF-67:BP2000 ratio and glucose addition did not alter the primary CoPt phase with a face-centered cubic (fcc) crystal structure but affected the morphology and surface functional groups of the catalyst support. The addition of glucose introduced C–H absorption bands at 2908 and 2858 cm⁻¹, indicating the formation of additional carbon during the pyrolysis process. Based on the electrochemical evaluation, the PtCo/NC-1:1:3 catalyst exhibited the best ORR activity among the samples without glucose, while PtCo/NC-Glu5 demonstrated the best performance among the glucose-modified catalysts, with a half-wave potential of 0.75 V, a mass activity of 61.46 mA mgPt −1 ,and a specific activity of 0.59 mA cm⁻². Single-cell testing confirmed that the PtCo/NC catalyst was capable of functioning as a PEMFC cathode catalyst, although its performance remained lower than that of the commercial Pt/C catalyst. Overall, the results indicate that optimizing the ZIF-67:BP2000 ratio together with an appropriate amount of glucose effectively enhances the electrocatalytic activity of PtCo/NC catalysts for PEMFC applications.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Glukosa, Katalis,PEMFC, Platinum, 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 and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Asia Candraningtyas
Date Deposited:	24 Jul 2026 14:26
Last Modified:	24 Jul 2026 14:26
URI:	http://repository.its.ac.id/id/eprint/137478

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