Pengaruh Platinum Loading Terhadap Performa Katalis Pt/CoNC Berbasis ZIF-67 Untuk Aplikasi PEMFC

Kurvawati, Siska (2026) Pengaruh Platinum Loading Terhadap Performa Katalis Pt/CoNC Berbasis ZIF-67 Untuk Aplikasi PEMFC. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5011221033-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (4MB) | Request a copy

Abstract

Pengembangan elektrokatalis Pt/CoNC merupakan salah satu strategi yang menjanjikan untuk meningkatkan aktivitas Oxygen Reduction Reaction (ORR) pada Proton Exchange Membrane Fuel Cell (PEMFC). Penelitian ini bertujuan untuk menganalisis pengaruh variasi Pt loading terhadap struktur, morfologi, dan aktivitas elektrokatalitik serta menganalisis hubungan ketiganya dengan kinerja single cell katalis Pt/CoNC berbasis ZIF-67/BP2000. Sintesis diawali dengan preparasi ZIF-67 sebagai sumber kobalt, kemudian dilakukan deposisi prekursor Pt melalui metode solvotermal pada 200 °C selama 12 jam dan dilanjutkan dengan pirolisis untuk menghasilkan katalis Pt/CoNC dengan variasi Pt loading 5, 10, 15, dan 20 wt%. Karakterisasi dilakukan menggunakan SEM, XRD, dan FTIR, sedangkan evaluasi elektrokimia dilakukan menggunakan Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), dan pengujian single cell PEMFC. Hasil SEM menunjukkan bahwa ZIF-67 memiliki morfologi poliedral khas yang masih dipertahankan setelah proses pirolisis, sedangkan XRD mengonfirmasi terbentuknya struktur kristal ZIF-67 dengan ukuran kristalit rata-rata sebesar 30,01 nm serta menunjukkan peningkatan intensitas puncak difraksi Pt seiring meningkatnya Pt loading. Hasil CV menunjukkan bahwa katalis Pt/CoNC-10 wt% memiliki nilai Electrochemical Surface Area (ECSA) tertinggi sebesar 86,68 m² gPt⁻¹. Berdasarkan pengujian LSV, katalis Pt/CoNC-20 wt% menunjukkan aktivitas ORR terbaik dengan nilai E₁/₂ sebesar 0,760 V, sedangkan Pt/CoNC-10 wt% memiliki nilai E₀ dan Jlim tertinggi masing-masing sebesar 0,861 V dan 4,595 mA cm⁻². Pengujian single cell menunjukkan bahwa Pt/CoNC-20 wt% menghasilkan OCV sebesar 0,72 V dan puncak densitas daya sebesar 28,72 mW cm⁻². Hasil penelitian menunjukkan bahwa variasi Pt loading berpengaruh signifikan terhadap karakteristik dan performa katalis Pt/CoNC untuk aplikasi PEMFC.
===========================================================================================================================================
The development of Pt/CoNC electrocatalysts is considered a promising strategy to improve the Oxygen Reduction Reaction (ORR) activity in Proton Exchange Membrane Fuel Cells (PEMFCs). This study aimed to investigate the effect of Pt loading variation on the structure, morphology, and electrocatalytic activity, as well as to analyze their relationship with the single-cell performance of ZIF-67/BP2000-based Pt/CoNC catalysts. The synthesis process began with the preparation of ZIF-67 as the cobalt source, followed by Pt precursor deposition through a solvothermal method at 200 °C for 12 h and subsequent pyrolysis to produce Pt/CoNC catalysts with Pt loadings of 5, 10, 15, and 20 wt%. Characterization was carried out using SEM, XRD, and FTIR, while electrochemical evaluation was performed using Cyclic Voltammetry (CV), Linear Sweep Voltammetry (LSV), and PEMFC single-cell testing. SEM results showed that the characteristic polyhedral morphology of ZIF-67 was preserved after pyrolysis, while XRD confirmed the formation of the crystalline structure of ZIF-67 with an average crystallite size of 30.01 nm and revealed an increase in Pt diffraction peak intensity with increasing Pt loading. CV results showed that the Pt/CoNC-10 wt% catalyst exhibited the highest Electrochemical Surface Area (ECSA) value of 86.68 m² gPt⁻¹. Based on LSV measurements, the Pt/CoNC-20 wt% catalyst demonstrated the best ORR activity with an E₁/₂ value of 0.760 V, whereas Pt/CoNC-10 wt% exhibited the highest onset potential (E₀) and limiting current density of 0.861 V and 4.595 mA cm⁻², respectively. Single-cell testing showed that Pt/CoNC-20 wt% achieved an OCV of 0.72 V and a peak power density of 28.72 mW cm⁻². The results indicate that Pt loading variation significantly affects the characteristics and performance of Pt/CoNC catalysts for PEMFC applications.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	ORR, PEMFC, Pt/CoNC, Pt Loading, 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 > QD553 Electrochemistry. Electrolysis 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:	Siska Kurvawati
Date Deposited:	24 Jul 2026 07:46
Last Modified:	24 Jul 2026 07:46
URI:	http://repository.its.ac.id/id/eprint/137316

Actions (login required)

View Item