KARAKTERISASI DAN UJI KINERJA SPEEK, cSMM DAN NAFION UNTUK APLIKASI DIRECT METHANOL FUEL CELL (DMFC)

Dhuhita , Anindyati and Kusuma Arti, Dewi (2010) KARAKTERISASI DAN UJI KINERJA SPEEK, cSMM DAN NAFION UNTUK APLIKASI DIRECT METHANOL FUEL CELL (DMFC). Undergraduate thesis, Jurusan Teknik Kimia Fak. Teknik UNDIP.

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Official URL: "Seminar Tugas Akhir, S1 Teknik Kimia UNDIP 2010"

Abstract

ABSTRAK Pada penelitian ini difokuskan pada karakterisasi membran untuk aplikasi Direct Methanol Fuel Cell (DMFC. Membran yang digunakan untuk DMFC adalah dari jenis PEEK. Membran PEEK telah dimodifikasi dengan menggunakan proses sulfonasi dan charged surface modifying macromolecule (cSMM) menggunakan MDI, DEG dan HBS dalam pelarut NMP. Karakteristik membran yang diteliti yaitu morfologi membran, water uptake, sudut kontak, stabilitas thermal, permeabilitas metanol, konduktivitas proton, dan uji ke dalam DMFC. Aplikasi ke dalam DMFC dilakukan pada suhu ruangan untuk memperoleh kurva polarisasi yang menunjukkan voltase dan daya listrik pada setiap variabel. Hasil yang diperoleh menunjukkan bahwa metode cSMM meningkatkan water uptake, stabilitas thermal, permeabilitas methanol dan konduktivitras proton. Dalam hal morfologi, modifikasi cSMM menunjukkan hasil yang memuaskan. Dalam hal uji DMFC, SPEEK tanpa modifikasi menunjukkan performa terbaik dalam stabilitas karena memiliki permeabilitas methanol yang rendah. Sebaliknya, SPEEK/cSMM (dengan modifikasi) menghasilkan voltase dan daya listrik tertinggi karena memiliki konduktivitas proton yang tinggi. The objective of this study focuses on the characterization of membranes for direct methanol fuel cells (DMFC). The membrane for DMFC was poly(ether ether ketone) (PEEK) as polymer membrane. The PEEK membrane was modified with sulfonation and charged surface modifying macromolecule (cSMM) using MDI, DEG and HBS in NMP solvent. The characterized of membrane were done using Scanning Electron Microscopy (SEM), water uptake, contact angle, thermal stability, methanol permeability, proton conductivity and DMFC test. DMFC tests were performed at room temperature to obtain polarization curves that show voltages and power density of each variable. The results showed that the cSMM methode of the polymer increases water uptake, thermal stability, methanol permeability and proton conductivity. In terms of morphology, it was found that cSMM method can be applied for membrane modification for DMFC application.. In terms of the DMFC tests of the membranes, SPEEK without modification proved to have the best performance in stability because of its low methanol permeability. In contrast, the best performance was achieved by the SPEEK/cSMM (with modification) in highest voltage and power density because of its high proton conductivity.

Item Type:Thesis (Undergraduate)
Subjects:T Technology > TP Chemical technology
Divisions:Faculty of Engineering > Department of Chemical Engineering
Faculty of Engineering > Department of Chemical Engineering
ID Code:11301
Deposited By:teknik kimia
Deposited On:24 May 2010 14:40
Last Modified:24 May 2010 14:40

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