Porous silica materials-polymer composite as proton Conducting membrane for fuel cell

Al-Amsyar, Syed Muhammad (2007) Porous silica materials-polymer composite as proton Conducting membrane for fuel cell. Undergraduate thesis, Faculty of Science.

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Abstract

Proton Exchange Membrane for Fuel Cell (PEMFC) application is an alternative source of energy for both mobile and stationary application due to its high efficiency, zero emission and environmental friendliness. Conventional PEMFC operates with Nafion membrane. Besides the high cost and the environmental hazards related with its disposal, Nafion also needs to be hydrated to be an effective proton conductor. The failure for Nafion to be operated above 100°C further complicates the design of fuel stack system. Therefore, it is desirable to explore an alternative, PEMFC that is capable to operate above 100 °C in order to improve its efficiency. Porous silica materials are identified as potential candidate as PEMFC due to their moderate proton conductivity, excellent water retention at high temperature and high molecular sieving capabilities. In order to drive water out from the electrode, thus preventing flooding; surface modification of porous silica materials with hydrophobic chains is essential. In the studies, the development of porous silica materials composite which are zeolite A, MCM-41, and aerogel loaded with sulfonated poly (styrene-co-divinylbenzene) as proton conducting membrane was carried out. The results show that PEMFC from functionalized silica based materials show appreciable conductivity compared to Nafion. The result indicate that the proton of MCM-41 sulfonated poly (styrene-co-divinylbenzene) shows similar proton conductivity with aerogel sulfonated poly(styrene-co-divinylbenzene) as 8.8345 X 10-3 Scm-1 and 6.485 X 10-3 Scm-1 respectively.

Item Type: UMK Thesis (Undergraduate)
Subject Heading: Chemicals
Subjects: Q Science > QD Chemistry
Supervisor: Prof. Dr. Halimaton Hamdan
Programme: Bachelor of Science (Chemistry)
Deposited By: Mr Syed Muhammad Al-Amsyar
Date Deposited: 18 Apr 2014 02:57
Last Modified: 26 Apr 2015 03:40
URI: http://umkeprints.umk.edu.my/id/eprint/2242

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