Zakiah, Zahra (2023) Analisis Pengaruh Elemen Paduan (Fe,Ni) dan Elemen Doping Katalis Berbasis Platinum Terhadap Oxygen Reduction Reaction (ORR) dan Power Density Membrane Electrode Assembly (MEA) untuk Aplikasi PEMFC. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Proton Exchange Membrane Fuel Cell (PEMFC) merupakan sel elektrokimia yang berbahan bakar hidrogen dan oksigen. Namun saat ini penelitian terkait PEMFC ini masih mengalami kendala yaitu konduktivitas carbon support yang kurang baik, stabilitas katalis yang masih kurang efektif, carbon loss yang cukup signifikan dan harga material yang cukup mahal terutama Platinum (Pt). Pada Penelitian ini terdapat beberapa cara yang dapat mengatasi permasalahan diatas, yaitu dengan penambahan elemen paduan Fe dan Ni pada katalis berbasis Pt, doping nitrogen pada carbon nanotube (CNT) sebagai carbon support dan doping PVP pada katalis paduan bimetal. Proses sintesis menggunakan etilen glikol untuk katalis FePt dan menggunakan metode reduksi NaBH4 untuk katalis Pt3Ni. Variasi pada penelitian ini adalah Fungsionalisasi dan Oksidasi CNT, N-Doped CNT, dan Doping PVP katalis. Dari hasil pengujian FTIR, tekonfirmasi adanya gugus carbonil dan hidroksil serta ikatan N-H yang menandakan N-Doped pada CNT. Dari hasil pengujian XRD, fungsionalisasi/oksidasi CNT dan Doping PVP memperngaruhi ukuran kristal dengan ukuran kristal terkecil pada katalis Fe sebesar 11,35 nm dan Ni sebesar 10,4 nm. Pada pengujian SEM, menunjukkan bentuk irregular yang menandakan terbentuknya aglomerasi dari elemen paduan bimetal. Dari hasil pengujian CV, katalis Fe berbasis Pt menghasilkan puncak adsorpsi hidrogen tertinggi dengan 63,665 m2/gPt. Limiting current tertinggi dihasilkan oleh katalis Ni dengan 6,552 mA.cm-2 yang bahkan melebihi Pt/C Commercial. Pengujian Single Cell menunjukkan nilai Power density tertinggi didapatkan oleh katalis Fe berbasis Pt doping PVP 50mg dengan 114,04 mW/cm-2, sedangkan Ni berbasis Pt dengan N-Doped FCNT menghasilkan power density tertinggi dengan nilai 250,39 mW.cm-2.
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Proton Exchange Membrane Fuel Cell (PEMFC) is an electrical cell fueled by hydrogen and oxygen. However, currently research related to PEMFC is still experiencing problems, namely the poor conductivity of carbon support, the stability of the catalyst which is still ineffective, significant carbon loss and the material price which is quite expensive, especially platinum (Pt). In this study there are several ways to overcome the above problems, namely by adding Fe and Ni alloy elements to Pt-based catalysts, nitrogen doping on Carbon Nanotubes (CNT) as carbon support and PVP doping on bimetallic alloy catalysts. The synthesis process uses ethylene glycol for the FePt catalyst and uses NaBH4 reduction for the Pt3Ni catalyst. Variations in this study are Functionalization and Oxidation of CNT, N-Doped CNT and Doping PVP catalyst. From the results of the FTIR test it was confirmed that there were carbonyl and hydroxyl groups and N-H bonds indicating N-Doped in CNT. From the results of the XRD test, CNT functionalization/oxidation and PVP doping affected crystal size with the smallest crystal size on the Fe catalyst of 11.35 nm and Ni of 10.4 nm. In the SEM test, it shows an irregular shape which indicates the formation of agglomeration of bimetal alloy elements. From the CV test, the Pt-based Fe catalyst produced the highest hydrogen adsorption peak with 63,665 m2/gPt. The highest limiting current was produced by Pt-based Ni catalyst with 6.552 mA.cm-2 which even exceeded Pt/C Commercial. The Single Cell test showed that the highest power density value was obtained by Fe catalyst based on Pt Doping PVP 50mg with 114.04mW.cm-2, while Ni based on Pt with N-Doped FCNT produced the highest power density with a value of 250.39 mW.cm-2
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | PEMFC, Platinum (Pt), CNT, Fe, Ni PEMFC, Platinum (Pt), CNT, Fe, Ni |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ324.5 Fuel systems T Technology > TJ Mechanical engineering and machinery > TJ808 Renewable energy sources. Energy harvesting. T Technology > TS Manufactures > TS170 New products. Product Development |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 27101-(S2) Master Thesis |
| Depositing User: | Zahra Zakiah |
| Date Deposited: | 02 Aug 2023 05:33 |
| Last Modified: | 02 Aug 2023 05:33 |
| URI: | http://repository.its.ac.id/id/eprint/102032 |
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