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Low-cost FC Stack Concept with Increased Power Density and Simplified Configuration: Utilizing an Advanced MEA with Integrated Molded Frame
Technical Paper
2011-39-7260
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In 2006, Nissan began limited leasing of the X-TRAIL FCV equipped with their in-house developed Fuel Cell (FC) stack. Since then, the FC stack has been improved in durability, cold start-up capability, cost and size with the aim of promoting full-scale commercialization of FCVs. However, reduction of cost and size has remained a significant challenge because limited mass transport through the membrane electrode assembly (MEA) has made it difficult to increase the rated current density of the FC. Furthermore, it has been difficult to reduce the variety of FC stack components due to the complex stack configuration. In this study, improvements have been achieved mainly by adopting an advanced MEA to overcome these difficulties. First, the adoption of a new MEA and separators has improved mass transport through the MEA for increased rated current density. Second, an integrated molded frame (IMF) has been adopted as the MEA support. One advantage of the IMF is its simplified structure and production process, reducing the MEA cost. Another advantage of the IMF is that its flexibility for forming structural shapes which has been utilized to build insulating side walls (ISWs) around the FC stack. Third, the FC stack structure has been simplified by elimination of a FC stack enclosure and adoption of a single-row configuration which have been enabled by ISWs. As a result, the power density of the new FC stack has been increased to 2.5 kW/L, which is 30% higher than that of the previous 2008 model. It is estimated that the mass production cost of the new FC stack can be halved to nearly meet the target of the DOE Hydrogen Program. With further improvements such as higher current density and lower catalyst loading, FCVs will be compact and affordable enough for ordinary consumers at the full-scale commercial stage.
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Abe, M., Oku, T., Numao, Y., Takaichi, S. et al., "Low-cost FC Stack Concept with Increased Power Density and Simplified Configuration: Utilizing an Advanced MEA with Integrated Molded Frame," SAE Technical Paper 2011-39-7260, 2011, https://doi.org/10.4271/2011-39-7260.Also In
References
- Aoyama, T. Iiyama, A. Shinohara, K. Kamegaya, S. “Status of FCV Development at Nissan and Future Issues" SAE Int. J. Engines 1 1 314 323 2009 10.4271/2008-01-0423
- Shimoi, R. Aoyama, T. Iiyama, A. “Development of Fuel Cell Stack Durability based on Actual Vehicle Test Data: Current Status and Future Work,” SAE Int. J. Engines 2 1 960 970 , 2009 10.4271/2009-01-1014
- Shimoi, R. Aoyama, T. Matsunaga, A. Iiyama, A. “Development of a Method for Estimating the Durability of Fuel Cell Stacks for Vehicle Use” JSAE Annual Congress (Spring), Proceedings No. 22-09, 107-20095032 May 20 2009
- Miyazawa, A. Ikezoe, K. Okuyama, Y. Yanagisawa, M. “The Development of High Power Density and Low Cost New Fuel Cell Stack” JSAE Annual Congress (Spring), Proceedings No. 22-09, 109-20095161 May 20 2009
- Ikezoe, K. Tabuchi, Y. Kagami, F. Nishimura, H. “Development of a FCV with a New FC Stack for Improved Cold Start Capability” SAE 2010-01-1093 2010
- Ikezoe, K. Tabuchi, Y. Kagami, F. Nishimura, H. “Development of a New FC Stack with Improved Cold Start Capability” JSAE Annual Congress (Spring), Proceedings No. 25-10, 127-20105172 May 19 2010
- Tabuchi, Y. Kubo, N. “The Impact of Rib/Channel, Water and Heat Transport on Limiting Current Density” ASME 6th International Fuel Cell Science, Engineering & Technology Conference, Proceedings of the Fuel Cell 2008-65201 2008
- Tabuchi, Y. Takaichi, S. Kubo, N. “Limiting Current Density Under Low Humidity Condition” Meet. Abstr. Electrochem. Soc. 802 793 2008
- Aotani, K. Tabuchi, Y. Kubo, N. Nakagaki, T. Katsuta, M. “An Analysis of Water Transport Phenomena of Polymer Electrolyte Membrane” Meet. Abstr. Electrochem. Soc. 1002 895 2010
- Aotani, K. Miyazaki, S. Kubo, N. Katsuta, M. “An Analysis of The Water Transport Properties of Polymer Electrolyte Membrane” ECS Trans. 16 134 2008
- Boillat, P. Scherer, G. G. Ichikawa, Y. Tasaki, Y. Shinohara, K. et al. “In-situ observation of the water distribution across a PEFC using high resolution neutron radiography” Electrochemistry Communications 10 2008 546 550
- Takaichi, S. Uchida, Hiroyuki Watabnabe, M. “Response of Specific Resistance Distribution in Electrolyte Membrane to Load Change at PEFC Operation” Journal of the Electrochemical Society 154 12 B1373 B1377 2007
- “Hydrogen, Fuel Cells and Infrastructure Technologies Program - Multi-year Research, Development and Demonstration Plan” U.S. Department of Energy - Energy Efficiency and Renewable Energy, 3.4 Fuel Cells 2007 April 2009
- James, B. Kalinoski, J. Baum, K. “Mass-Production Cost Estimation for Automotive Fuel Cell Systems” DOE Hydrogen Program Review June 9 2010
- Ohma, A. Mashio, T. Ono, Y. Sato, K. Iden, H. Sakai, K. Kanesaka, H. Shinohara, K. “Estimation of the Pt Effectiveness Factor in a Cathode Catalyst Layer for PEMFC” The 50th Battery Symposium in Japan, 2F03 Nov. 30 2009
- Sakai, K. Sato, K. Mashio, T. Ohma, A. Yamaguchi, K. Shinohara, K. “Analysis of Reactant Gas Transport in Catalyst Layers: Effect of Pt-loadings” ECS Trans. 25 1 1193 2009