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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received January 31, 2008
Accepted March 1, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Preparation of graphite composite bipolar plate for PEMFC

Saowaluck Bhlapibul Kejvalee Pruksathorn^†

Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

kejvalee.p@chula.ac.th

Korean Journal of Chemical Engineering, September 2008, 25(5), 1226-1231(6), 10.1007/s11814-008-0203-2

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Abstract

This research studied the preparation of graphite composite using liquid thermosetting plastic such as polyester resin (POE), phenolic modified alkyd resin (PhA) and mixed resin (POE with 10% PhA) as a binder. The morphology, physical, electrical and mechanical properties of the graphite composites were analyzed. The results showed that POE could combine with graphite powder (the 66% wt. saturated of graphite powder) better than PhA and mixed resin and gave higher electrical conductivity (4.52 S/cm). It was also found that epoxy resin could improve the mechanical property of composite plate. The addition of TiO2 and ZnSt slightly decreased the electrical conductivity and the water absorption. Moreover, it was proposed that TiO2 could improve the mechanical property. Carbon fiber can increase electrical and mechanical properties and water absorption of the composite with POE as a binder. The mixing of wet-lay mixture with graphite, carbon fiber and POE composite improved the mechanical property and decreased the water absorption.

Keywords

Graphite Composite Bipolar Plate Polyester Resin PEM Fuel Cell

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