Analisis Pengaruh Temperatur Hidrotermal Pada Sintesa Material Elektrokatalis Berbahan Pd-Au/Graphene Terhadap Unjuk Kerja Direct Methanol Fuel Cells (DMFC)

Puspitasari, Dyah Ayu Putri (2016) Analisis Pengaruh Temperatur Hidrotermal Pada Sintesa Material Elektrokatalis Berbahan Pd-Au/Graphene Terhadap Unjuk Kerja Direct Methanol Fuel Cells (DMFC). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Efisiensi DMFC dapat diringkatkan dengan menggunakan graphene sebagai pendukung elektrokatalis. Properti elektronik graphene didukung oleh luas permukaan yang besar. Tujuan dalam penelitian ini adalah menganalisis pengaruh variasi temperatur hidrotermal pada sintesa material elektrokatalis berbahan Pd-Au/graphene terhadap unjuk kerja DMFC (Direct Methanol Fuel Cells). Grafit dioksidasi menjadi grafit oksida melalui metode Hummer. Grafit Oksida kemudian direduksi dengan menambahkan Zn dan proses hydrothermal selama 12 jam pada temperatur 1600C, 1800C, dan 2000C. Pada penelitian ini digunakan sputtering logam Pd-Au. Pengujian yang akan digunakan antara lain SEM, XRD, dan analisis CV. Berdasarkan pengujian CV elektrokatalis PdAu-Graphene yang disintesis dengan temperatur 160oC mempunyai nilai ECSAs paling tinggi yakni sebesar 3,6 cm2/mg dan kapasitansi yang paling tinggi sebesar 21,82 F/g. Selain itu, memiliki kemampuan elektrokimia paling paling baik dibuktikan dengan nilai onset paling rendah yakni -0,587V, dari perhitungan energi Gibbs dapat dikatakan bahwa reaksi berjalan spontan, rasio If/Ib paling besar yakni 1,29, dan memiliki tingkat kestabilan yang baik dalam oksidasi methanol. ============================================================================== DMFC efficiency can be improved by using graphene as a supporter of electrocoagulation. Electronic properties graphene is supported by a large surface area. The aim in this study was to analyze the effect of temperature variation in the hydrothermal synthesis of electrocatalyst material made of Pd-Au / graphene on the performance of DMFC (Direct Methanol Fuel Cells). Oxidized graphite into graphite oxide by methods Hummer. Graphite oxide is then reduced by adding Zn and hydrothermal processes for 12 hours at a temperature of 1600C, 1800C, and 2000C. In this study used a metal sputtering Pd-Au. Tests that will be used, among others, SEM, XRD and CV analysis. Based on testing CV-Graphene PDAU electrocatalyst synthesized by the temperature of 160oC has ECSAs highest value which is equal to 3.6 cm2 / mg and the highest capacitance of 21.82 F / g. In addition, having the ability electrochemical most kindest most evidenced by the low value of the onset of the -0,587V, calculations of Gibbs energy, it can be said that the reaction spontaneously, the ratio If / Ib greatest namely 1.29, and has a level good stability in the oxidation of methanol.

Item Type: Thesis (Undergraduate)
Additional Information: RSMt 621.312 429 Pus a
Uncontrolled Keywords: DMFC; Graphene; Hidrotermal; Pd-Au/Graphene
Subjects: T Technology > TN Mining engineering. Metallurgy
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > (S1) Undergraduate Theses
Depositing User: Mrs Anis Wulandari
Date Deposited: 04 Jul 2017 07:24
Last Modified: 27 Dec 2018 04:23
URI: http://repository.its.ac.id/id/eprint/41864

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