Analisis Pengaruh Variasi Rasio Berat Nafion/Karbon Pada Lapisan Katalis Membrane Electrode Assembly Terhadap Performa Elektrokimia PEM Fuel Cell

Wicaksono, Muhamad Akbar (2021) Analisis Pengaruh Variasi Rasio Berat Nafion/Karbon Pada Lapisan Katalis Membrane Electrode Assembly Terhadap Performa Elektrokimia PEM Fuel Cell. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Saat ini, penggunaan fuel cell semakin meningkat dari tahun ketahun, hal tersebut terjadi karena fuel cell memiliki efisiensi tinggi, dan ramah terhadap lingkungan. Akan tetapi terdapat permasalahan terkait kinerja fuel cell, dan biaya pembuatan yang relatif mahal, oleh karena itu dilakukan pengembangan pada Membrane Electrode Assembly (MEA) yang merupakan bagian paling vital dan mahal pad PEMFC, untuk dapat meningkatkan pemanfaatan Pt dan luas permukaan elektrokimia aktif. Tujuan penelitian ini adalah untuk menganalisis variasi rasio berat nafion
dengan karbon penyangga (N/C) yaitu 0,45, 0,6, dan 0,75 pada lapisan katalis MEA terhadap morfologi dan performa PEMFC.Metode deposisi yang digunakan pada penelitian ini adalah doctor blade method. Berdasarkan hasil pengujian SEM sampel lapisan katalis dengan rasio berat N/C 0,6 terbentuk agregat nafion pada katalis Pt-C dan nafion membentuk ikatan yang seragam dan terhubung, pada pengujian cyclic voltammetry didapat nilai electrochemical surface area sebesar 37 m2/g. Dan hasil pengujian EIS, dengan nilai Rct terendah yaitu sebesar 91,59 Ω.cm2, serta mendapatkan nilai power density tertinggi pada pengujian polarisasi yaitu sebesar 6,75 mW.cm-2.
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Currently, the use of fuel cells is increasing from year to year, this happens because fuel cells have high efficiency, and are friendly to the environment. However, there are problems related to the performance of the fuel cell, and the relatively expensive manufacturing cost, therefore the membrane electrode assembly (MEA) which is the most vital and expensive part of the PEMFC is
developed, in order to increase the utilization of Pt and the active electrochemical surface area. The purpose of this study was to analyze the variation of the weight ratio of nafion with carbon buffer (N/C) ie 0,45, 0,6, and 0,75 in the MEA catalyst layer on the morphology and performance of PEMFC. The deposition method used in this study is the doctor blade method. Based on the results
of the SEM test of the catalyst layer sample with a weight ratio of N/C 0,6, nafion aggregates on the Pt-C catalyst and the nafion forms a uniform and connected bond, in the cyclic voltammetry test the electrochemical surface area value is 37 m2/g. And the results of the EIS test, with the lowest Rct value of 91.59 .cm2, and getting the highest power density value in the polarization test, which is 6.75 mW.cm-2

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Doctor blade method, fuel cell, Catalyst Pt-C, MEA, ratio N/C
Subjects:	Q Science > QD Chemistry > QD115 Electrochemical analysis
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Muhamad Akbar Wicaksono
Date Deposited:	12 Aug 2021 09:07
Last Modified:	12 Aug 2021 09:07
URI:	http://repository.its.ac.id/id/eprint/85704

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