Analisis Pengaruh Waktu Sputtering Pd Dan Ni Pada Sintesis Material Elektrokatalisis Berbahan Pd-Ni/Graphene Terhadap Unjuk Kerja Direct Methanol Fuel Cell (DMFC)

Nuriana, Yogi (2017) Analisis Pengaruh Waktu Sputtering Pd Dan Ni Pada Sintesis Material Elektrokatalisis Berbahan Pd-Ni/Graphene Terhadap Unjuk Kerja Direct Methanol Fuel Cell (DMFC). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Direct Methanol Fuel Cell (DMFC) memiliki potensi untuk dikembangkan dengan menambahkan graphene sebagai material pendukung katalisnya karena luas permukaannya yang tinggi. Kemudian kinerjanya juga dapat ditingkatkan dengan penambahan logam yang sesuai seperti Nikel. Tujuan penelitian ini ialah menganalisa pengaruh waktu sputtering pada sintesis material elektrokatalis berbahan graphene/Pd-Ni terhadap unjuk kerja DMFC. Graphene diperoleh dari grafit yang dioksidasi menggunakan metode Hummer kemudian direduksi dengan serbuk Zn dan proses hidrotermal selama 12 jam pada temperatur 160oC. Kemudian didepositkan pada carbon cloth lalu dilapisi dengan logam Pd dan/atau Ni selama 15, 10 dan 5 menit dengan metode radio-frequency sputtering. Hasil penelitian menunjukkan waktu sputtering Pd(10) dan Pd(15)-Ni(5) memberikan hasil terbaik dengan nilai kapasitansi spesifik 32,86 F/g dan 23,30 F/g, Electrochemical active surface area (ECSA) sebesar 0,747 m2/g dan 0,371 m2/g berdasarkan pengujian cyclic voltametry (CV) pada larutan KOH 1M. Sedangkan pengujian pada elektrolit KOH+CH3OH 1M menghasilkan rasio If/Ib 23,5 dan 47,36 serta densitas arus sebesar 4,80 mA/g dan 4,18 mA/g. ================================================================================================================== Direct Methanol Fuel Cell (DMFC) has the potential to be developed by adding Graphene as a catalyst support material due to the high active surface area. Its performance also can be improved by the addition of suitable metal such as nickel. The purpose of this study is to analyze the influence of sputtering time on the synthesis of the electrocatalyst Graphene/Pd-Ni material on the performance of DMFC. Graphene was obtained from the oxidation process of graphite using Hummer method adn followed by reduction process using Zn powder and hydrothermal processes for 12 hours at a temperature of 160oC. Graphene was then deposited on Carbon Cloth and coated with Pd and/or Ni for 15, 10 and 5 minutes by Radio-frequency Sputtering method. The results showed Pd(10) and Pd(15)-Ni(5) sputtering time gives the best results with specific capacitance value of 32.86 F/g and 23.30 F/g, ECSA of 0,747 m2/g and 0,371 m2/g based CV test on KOH solution 1M. CV test in CH3OH + 1M KOH electrolyte give ratio If/Ib 23.5 and 47.36 and current density of 4,80 mA/g and 4.18 mA/g.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: DMFC, Graphene, Pd, Ni, Sputtering.
Subjects: T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial.
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User: YOGI NURIANA -
Date Deposited: 13 Mar 2017 02:06
Last Modified: 05 Mar 2019 04:41
URI: https://repository.its.ac.id/id/eprint/1836

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