Low-Cost FC Stack Concept with Increased Power Density and Simplified Configuration Utilizing an Advanced MEA

Abe, Mitsutaka; Oku, Takanori; Numao, Yasuhiro; Takaichi, Satoshi; Yanagisawa, Masanari

doi:10.4271/2011-01-1344

Cited by 14 publications

(3 citation statements)

References 8 publications

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“…In PEMFCs, the energy of fuel is directly converted into electricity through electrochemical reactions with platinum (Pt) as a catalyst. Since Pt is a noble metal, a reduction of total Pt usage is essential to achieve cost reduction of Fuel Cell Electric Vehicles (FCEVs) [1,2]. High current density operation is the one of the most promising solutions, since it contributes to a reduction in size as well as in Pt usage [3].…”

Section: Introductionmentioning

confidence: 99%

Impact of Interfacial Water Transport in PEMFCs on Cell Performance

Kotaka

Tabuchi

Pasaogullari

et al. 2014

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Impact of Interfacial Water Transport in PEMFCs on Cell Performance

Kotaka

Tabuchi

Pasaogullari

et al. 2014

Electrochimica Acta

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“…For the coming stage of FCV commercialization, we have proposed a new FC stack concept (2011 model) as shown in Fig. 3, which incorporates various new technologies such as an advanced MEA [10][11][12]. With increased maximum power density of 2.5 kW/L as shown in Fig.…”

Section: Newly Developed Fc Stackmentioning

confidence: 99%

Low-cost FC Stack Concept with Simplified Configuration Utilizing Advanced MEA and FC Module

Abe

Ichihara

Oku

et al. 2012

WEVJ

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The development of fuel cell vehicles (FCVs) at Nissan proceeded to the level of limited customer leasing with the X-TRAIL FCV equipped with an in-house FC stack (2005-model). Subsequently, a further improved 2008-model FC stack was developed with double the power density and using only half the amount of precious-metal catalysts, thus giving the vehicle subzero startability at-20°C. For the coming stage of FCV commercialization, we have proposed the concept of a compact and low-cost FC stack (2011 model) that increases the maximum power density to 2.5 kW/L and reduces the estimated production cost to a level that comes very close to meeting the target of the DOE Hydrogen Program for the adoption of 2010 technologies. These advances were achieved mainly by improving membrane electrode assembly (MEA) performance and simplifying the FC stack structure. This paper presents an overview of the simplified structure of the new FC stack incorporating various new features: a shell-enclosed FC module and simplified configuration. This remarkable evolution of the FC stack structure was brought about by the development of various technologies: an advanced MEA, an adhesive seal, and a fastening enclosure. The advanced MEA has an integrated molded frame around it to reduce the production cost. Another benefit of the advanced MEA is the ability to build a stiff insulating shell around a FC module when the frames are bonded together with adhesive seals to form the module. As a result, the FC module can be fastened directly using steel plates uniquely shaped in both the stacking direction and the direction perpendicular to it, thereby maintaining proper compression to prevent the stacked FC modules from sliding. These improvements reduce the variety of components of the new FC stack by an estimated 75%, thus increasing the maximum power density by 30%, compared with the 2008-model FC stack.

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“…Increasing current density by improvement of mass transport through membrane electrode assembly (MEA) is effective to reduce total active area. It was demonstrated that introduction of thin polymer electrolyte membrane and fine flow channels has improved PEFC's performance especially at high current density range resulting in substantial reduction of Pt loading, although further reduction is needed (1).…”

Section: Introductionmentioning

confidence: 99%

Development of Advanced Electrocatalyst for Automotive Polymer Electrolyte Fuel Cells

et al. 2013

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Reduction of Pt loading on fuel cell electric vehicles is strongly desired for fuel cell electric vehicles to be commercially viable. Activity enhancement for the sluggish oxygen reduction reaction of Pt-based electrocatalyst is the most essential to reduce Pt loading. Here, we provide a brief review of recent advances in Pt-based ORR electrocatalysts followed by electrocatalyst research activities of Nissan.

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Low-Cost FC Stack Concept with Increased Power Density and Simplified Configuration Utilizing an Advanced MEA

Cited by 14 publications

References 8 publications

Impact of Interfacial Water Transport in PEMFCs on Cell Performance

Impact of Interfacial Water Transport in PEMFCs on Cell Performance

Low-cost FC Stack Concept with Simplified Configuration Utilizing Advanced MEA and FC Module

Development of Advanced Electrocatalyst for Automotive Polymer Electrolyte Fuel Cells

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