Performance of PEMFC stack using expanded graphite bipolar plates |
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| Affiliation: | 1. Fuel Cell R&D Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;2. Graduate University of the Chinese Academy of Sciences, Beijing 100039, China;1. Department of Mechanical Engineering, Chinese Culture University, No. 55, Hwa-Kang Road, Taipei 11114, Taiwan;2. Department of Aeronautics and Astronautics, National Cheng Kung University, No. 1, Ta-Hsueh Road, Tainan 70101, Taiwan;3. Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan;4. Environment and Energy Issue Department, Automotive Research and Testing Center, No. 6, Lu-Gong S. 7th Road, Lu-Gang Town, Chang-Hua County 50544, Taiwan;1. Renewable Energy Research Center, Mechanical Engineering Department, Babol Noshirvani University of Technology, Babol, Iran;2. Malek Ashtar University of Technology, Fuel Cell Technology Research Laboratory, Tehran, Iran;1. School of Mechanical Aerospace & Systems Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea;2. LANL-CBNU Engineering Institute Korea, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea;3. Agency for Defense Development, P.O. Box 35, Yuseong-gu, Daejeon 305-600, Republic of Korea |
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| Abstract: | The bipolar plates are in weight and volume the major part of PEM fuel cell stack, and also a significant effect to the stack cost. To develop the low-cost and low-weight bipolar plate for PEM fuel cell, we have developed a kind of cheap expanded graphite plate material and a production process for fuel cell bipolar plates. The plates have a high electric conductivity and low density, and can be stamped directly forming fuel cell bipolar plates. Then, 1 and 10 kW stacks using expanded graphite bipolar plates are successfully assembled. The contact resistance of the bipolar plate is investigated and the electrochemical performances of the fuel cell stacks are tested. Good fuel cell performance is obtained and the voltage distribution among every single cell in the stacks is very uniform. |
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