KARAKTERISASI ELEKTRODA Pt-Co/C YANG DIBUAT DENGAN METODE SEMBURAN DAN UJI KINERJANYA MENGGUNAKAN RAKITAN ELEKTRODA MEMBRAN (MEA) PADA DMFC

MARCELINA, YUNI and Rohendi, Dedi and Syarif, Nirwan (2018) KARAKTERISASI ELEKTRODA Pt-Co/C YANG DIBUAT DENGAN METODE SEMBURAN DAN UJI KINERJANYA MENGGUNAKAN RAKITAN ELEKTRODA MEMBRAN (MEA) PADA DMFC. Undergraduate thesis, Sriwijaya University.

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Abstract

Fabrication and characterization of electrodes Pt-Co/C and its application in direct methanol fuel cell (DMFC) has been done. The electrodes are made by using a mixture of Platinum and cobalt catalyst that is distributed to gas diffusion layer (GDL) using by spraying methode. The mixed catalyst has a variation of the percentage of 0%, 20%, 40%, 60%, 80% and 100% Pt’s loading against Co with loading total is 2.5 mg/cm2. The electrodes are characterized using XRD, cyclic voltammetry (CV) and electrical conductivity. XRD analysis results showed carbon at position 2 = 26,62o, 41,2º, and 54,6º, Peak of Platinum is at position 2 = 39.8-40.2o and peak of cobalt at position 2 = 45º and 65. Voltammogram Curves resulting from Cyclic Voltammetry test (CV) indicates the presence of the reversible reaction, shown with the formation of the anodic peak (upper curve) and cathodic peak (bottom curve). This shows that there has been a redox reaction in the process of fusion between Pt and Co. The catalytic activity of the electrode data calculated from the results of CV by using the Electrochemial Surface Area (ECSA) method. The highest catalytic activity at 20% of Pt electrode 0,461 x 10-5 cm2/g and the lowest at 100% of Pt electrode 0,073 x 10-5 cm2/g. In electrical conductivity test using a digital multimeter with auto DC power supply as well as digital, obtained the highest value at 40% of Pt 0,0057 S.cm-1 and the lowest value at 100% of Pt 0,0029 S.cm-1. The applications made on stack DMFC with 5% methanol fuel and obtained data OCV (open circuit voltage) with the value of the current and voltage when given the resistor varies. The highest value of the OCV on 60% of Pt of 8,55 mV and the lowest at 0% Pt of 4,79 mV. On gives a resistor, a straight comparison between the values obtained by administering the resistor with voltage produced. The greater the resistor given, the value of the voltage will increase.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Direct methanol fuel cell, cathalyst, impregnation, platinum, ruthenium
Subjects:	Q Science > QD Chemistry > QD450-801 Physical and theoretical chemistry
Divisions:	08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1)
Depositing User:	Mrs Kharisma Afrianti
Date Deposited:	03 Sep 2019 06:50
Last Modified:	31 Mar 2023 13:45
URI:	http://repository.unsri.ac.id/id/eprint/6136

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