Manufacture of a polymer-based carbon nanocomposite as bipolar plate of proton exchange membrane fuel cells |
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| Affiliation: | 1. Department of Material Engineering, Azad University of Shahrood, P.O. Box 14395-836, Shahrood, Iran;2. Material Engineering Department, Shiraz University, P.O. Box 71946-85115, Shiraz, Iran;3. Material Research Center, P.O. Box 14395-836, Tehran, Iran;1. School of Mechanical, Aerospace & Systems Engineering, KAIST, Daejeon 34141, Republic of Korea;2. LANL-CBNU Engineering Institute Korea, Chonbuk National University, Jeonju 55069, Republic of Korea;1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;2. College of Materials Science and Engineering, North University of China, Taiyuan 030051, China;1. Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia;2. Centre for Materials Engineering and Smart Manufacturing, Mechanical Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia;3. Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia |
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| Abstract: | The aim of this paper is to prepare a polymer-based carbon nanocomposite reinforced by carbon fiber cloth (CF) to be utilized as bipolar plate of proton exchange membrane (PEM) fuel cell. For this purpose, some single, double, and triple-filler composites were manufactured by using phenolic resin as polymer (P) and graphite (G), carbon fiber (CF) and expanded graphite (EG) as fillers. The production method was compression-molding technique. The electrical conductivity, flexural strength, toughness, hardness, porosity, and hydrogen permeability tests were then measured to determine the mechanical and physical properties. A triple-filler composite containing 45 wt.% G, 10 wt.% CF, 5 wt.% EG, reinforced by a layer of CF cloth, was selected as composite bipolar plate. The electrical conductivity, thermal conductivity, and flexural strength of this composite were 74 S/cm, 9.6 W/m K, and 74 MPa, respectively, which are higher than the specified value by department of energy in USA (DOE). The composite bipolar plate used in the single fuel cell assembly showed a maximum power density 810 mW/cm2. In this paper, a material selection was performed on the different materials of bipolar plates. It can be concluded that the composite bipolar plates are more suitable for high life time stationary applications. |
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