Analisis Pengaruh Variasi pH Pada Sintesis Katalis Polymer Electrolyte Membrane Fuel Cell Dengan Carbon Nanotube Sebagai Penyangga Katalis

Sukmana, Hafizh Alim (2021) Analisis Pengaruh Variasi pH Pada Sintesis Katalis Polymer Electrolyte Membrane Fuel Cell Dengan Carbon Nanotube Sebagai Penyangga Katalis. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Fuel cell adalah komponen utama sumber energi listrik terbarukan dengan penggunaan hydrogen sebagai bahan bakar. Jenis fuel cell yang sering digunakan adalah Proton-Exchange Membrane Fuel Cell (PEMFC). Namun, dalam komersialisasi PEMFC terdapat kendala yaitu penggunaan penyangga katalis Platinum (Pt) dari Carbon Black (CB) yang akan cenderung menggumpal dan menimbulkan korosi dengan operasi fuel cell yang berulang-ulang. Saat ini berkembang ide dengan penggunaan Carbon Nanotube (CNT) sebagai penyangga katalis karena memiliki karakteristik seperti hidrofobisitas, konduktivitas, dan luas permukaan yang lebih baik. Pada penelitian ini dianalisis pengaruh variasi pH dalam proses sintesis terhadap fasa, morfologi, dan performa elektrokimia katalis Pt/CNT. Proses sintesis menggunakan colloidal dengan dengan variasi pH 9,11, dan 13. Hasil penelitian menunjukan bahwa pada pH 13 membentuk nanopartikel Pt dengan rata-rata ukuran partikel terkecil sebesar 4,208 nm, lalu pada pH 11 sebesar 5,096 nm, dan pada pH 9 menunjukkan rata-rata ukuran partikel terbesar sebesar 7,872 nm. Nilai performa elektrokimia terbaik didapatkan pada sampel dengan konsentrasi variasi pH 13 memiliki luasan permukaan aktif terbesar 40.33 m2/g, dengan onset potential sebesar 0,798 V yang melibatkan elektron sebanyak 4,01 untuk oxygen reduction reaction mengurangi kemungkinan adanya degradasi.
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Fuel cells are the main component of renewable electrical energy sources with hydrogen as fuel. The type of fuel cell that often used is Proton-Exchange Membrane Fuel Cell (PEMFC). However, in the commercialization of PEMFC there are weaknesses, which is the use of a platinum (Pt) catalyst support from carbon black (CB) which tends to agglomerate and corrode with repeated fuel cell operations. Currently, has developed an idea for use of carbon nanotubes (CNT) as a catalyst buffer because it has better characteristics such as hydrophobicity, conductivity and surface area. In this study, the effect of pH variations in the synthesis process on the phase, morphology, and electrochemical performance of the Pt/CNT catalyst was analyzed. The synthesis process used colloidal with variations in pH 9.11, and 13. The results showed that at pH 13 it formed Pt nanoparticles with the smallest average particle size of 4.208 nm, then at pH 11 it was 5.096 nm, and at pH 9 it showed an average the largest average particle size is 7.872 nm. The best electrochemical performance value was obtained in samples with varying concentrations of pH 13 having the largest active surface area of 40.33 m2/g, with an onset potential of 0.798 V involving 4.01 electrons for the oxygen reduction reaction the possibility of degradation.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Fuel Cell, PEMFC, Katalis, Carbon Nanotube, Fuel Cell, PEMFC, Catalyst, Carbon Nanotube,
Subjects:	Q Science > QD Chemistry > QD115 Electrochemical analysis T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2931 Fuel cells
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Hafizh Alim Sukmana
Date Deposited:	10 Aug 2021 21:22
Last Modified:	10 Aug 2021 21:22
URI:	http://repository.its.ac.id/id/eprint/85346

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