Effects of hybrid carbon fillers of polymer composite bipolar plates on the performance of direct methanol fuel cells |
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| Affiliation: | 1. Department of Hydrogen and Fuel Cell Engineering, Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea;2. Department of BIN Fusion Technology (WCU program), Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea;3. BIN Fusion Research Team, Department of Polymer and Nano Science and Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Republic of Korea;4. Surface Engineering and Tribology, CSIR- Central Mechanical Engineering Research Institute, Durgapur-713209, India;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. School of Mechanical, Aerospace and Systems Engineering, KAIST (Korea Advanced Institute of Science and Technology), 291, Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea;2. LANL-CBNU Engineering Institute Korea, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, Republic of Korea;2. LANL-CBNU Engineering Institute Korea, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea;1. Central South University, State Key Laboratory of High Performance and Complex Manufacturing, Lushan South Road 932, 410083 Changsha, China;2. Clausthal University of Technology, Institute of Polymer Materials and Plastics Engineering, Agricolastrasse 6, D-38678 Clausthal-Zellerfeld, Germany;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 effects of carbon filler type on the properties and performance of composite bipolar plates fabricated by compression molding of carbon fillers such as graphite, carbon black (CB), multi-walled carbon nanotube (MWNT), carbon fiber (CF) and powder type epoxy have been investigated. The electrical conductivity and flexural properties of the composites are increased by increasing the content of fibrous conducting fillers, e.g. MWNT and CF. On the contrary, incorporation of particulate fillers such as CB and graphite plays a significant role in enhancing the electrical conductivity but has a negative effect on the flexural properties of the composites. The current–voltage curve of the fuel cell indicates that the performance of the fuel cell is improved upon selection of an optimum amount of carbon filler in the composite bipolar plates. |
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| Keywords: | A Polymer–matrix composites (PMCs) B Electrical properties B Mechanical properties E Compression molding B Microstructures |
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