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.
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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 > 28201-(S1) Undergraduate Thesis |
| Depositing User: | 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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