This study considers the performance effect about a variation of the gasket thickness at the cathode side of the DMFC’s (Direct Methanol Fuel Cell) stack. Stack performance is largely influenced by the compressed thickness of GDL (Gas Diffusion Layer). The compressed thickness of GDL is directly controlled by gasket thickness. When GDL is not compressed enough, the ohmic loss is increased. Additionally, the differential pressure is decreased, because the channel of the separator is not blocked by GDL. On the contrary, being compressed extremely, GDL or MEA (Membrane Electrode Assembly) is physically damaged. The differential pressure is increased as well. In this respect, the optimization of the gasket thickness is one of the important factors to maximize the stack performance. In this study, the unit cell stacks with respect to changing gasket thickness at the cathode side are made in order to verify the effect about the compressed thickness of GDL. It is shown how the optimal gasket thickness may be achieved at the cathode side.
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ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
June 16–18, 2008
Denver, Colorado, USA
Conference Sponsors:
- Nanotechnology Institute
ISBN:
0-7918-4318-1
PROCEEDINGS PAPER
Effect of Cathode Gasket Thickness to Performance of Direct Methanol Fuel Cells Available to Purchase
Hoon Choi,
Hoon Choi
Seoul National University, Seoul, South Korea
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Yong-Sheen Hwang,
Yong-Sheen Hwang
Seoul National University, Seoul, South Korea
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Dae-Young Lee,
Dae-Young Lee
Korea Institute of Science and Technology, Seoul, South Korea
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Seo Young Kim,
Seo Young Kim
Korea Institute of Science and Technology, Seoul, South Korea
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Suk-Won Cha
Suk-Won Cha
Seoul National University, Seoul, South Korea
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Hoon Choi
Seoul National University, Seoul, South Korea
Yong-Sheen Hwang
Seoul National University, Seoul, South Korea
Dae-Young Lee
Korea Institute of Science and Technology, Seoul, South Korea
Seo Young Kim
Korea Institute of Science and Technology, Seoul, South Korea
Suk-Won Cha
Seoul National University, Seoul, South Korea
Paper No:
FuelCell2008-65067, pp. 865-870; 6 pages
Published Online:
June 22, 2009
Citation
Choi, H, Hwang, Y, Lee, D, Kim, SY, & Cha, S. "Effect of Cathode Gasket Thickness to Performance of Direct Methanol Fuel Cells." Proceedings of the ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. Denver, Colorado, USA. June 16–18, 2008. pp. 865-870. ASME. https://doi.org/10.1115/FuelCell2008-65067
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