Highly conductive bipolar plate for polymer electrolyte membrane fuel cell (PEMFC) was prepared using phenol novolac-type epoxy/graphite powder (GP)/carbon fiber filament (CFF) composite, and a rubber-modified epoxy resin was introduced to the phenol novolac-type epoxy resin in order to give elasticity to the bipolar plate. The cure condition of the neat epoxy system, differential scanning calorimetry (DSC) was carried out and the DSC data were introduced to Kissinger equation. And tensile and flexural tests were carried out using universal testing machine (UTM) and the surface morphology of the fractured specimen and the interfacial bonding between epoxy matrix and CFF were observed by a scanning electron microscopy (SEM). Kissinger expression showed that the activation energy for the cure kinetics of novolac epoxy (9.3g)/rubber epoxy (1.0g)/curing agent (9.6g)/accelerator (0.1g) system was 76.8 kJ/mol and the pre-exponential factor was 1.73 × 1010 min−1. As was expected, electrical conductivity increased with increasing total carbon content, and the value increased with increasing CFF content at the same carbon content. Tensile strength and flexural strength linearly decreased with increasing epoxy content, however at the same carbon content, these values increased with increasing CFF content. It was because the CFF acted as electrical conductive pass and the good effect on the mechanical properties was due to the strong bonding between CFF and epoxy resin, which was confirmed by the SEM.
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ASME 2013 International Mechanical Engineering Congress and Exposition
November 15–21, 2013
San Diego, California, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5644-4
PROCEEDINGS PAPER
Preparation of Elastic Bipolar Plate for Polymer Electrolyte Fuel Cells Available to Purchase
Jae-Young Lee,
Jae-Young Lee
Woosuk University, Bongdong, Chonbuk, Korea
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Bumchoul Choi,
Bumchoul Choi
Woosuk University, Bongdong, Chonbuk, Korea
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Woo-Kum Lee,
Woo-Kum Lee
Woosuk University, Bongdong, Chonbuk, Korea
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Joong-Pyo Shim,
Joong-Pyo Shim
Kunsan National University, Kunsan, Jeonbuk, Korea
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Hong-Ki Lee
Hong-Ki Lee
Woosuk University, Bongdong, Chonbuk, Korea
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Jae-Young Lee
Woosuk University, Bongdong, Chonbuk, Korea
Bumchoul Choi
Woosuk University, Bongdong, Chonbuk, Korea
Woo-Kum Lee
Woosuk University, Bongdong, Chonbuk, Korea
Joong-Pyo Shim
Kunsan National University, Kunsan, Jeonbuk, Korea
Hong-Ki Lee
Woosuk University, Bongdong, Chonbuk, Korea
Paper No:
IMECE2013-63579, V015T16A011; 8 pages
Published Online:
April 2, 2014
Citation
Lee, J, Choi, B, Lee, W, Shim, J, & Lee, H. "Preparation of Elastic Bipolar Plate for Polymer Electrolyte Fuel Cells." Proceedings of the ASME 2013 International Mechanical Engineering Congress and Exposition. Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters). San Diego, California, USA. November 15–21, 2013. V015T16A011. ASME. https://doi.org/10.1115/IMECE2013-63579
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