Stack performance optimization of low power PEM Fuel Cell

Abstract : For a PEMFC under operation, different causes of performance loss exist. Performance loss can increase when the system is scaled up to higher power. In this work the performance of low-power stacks manufactured in CICY is optimized through studies of the behavior and performance of single cells and stacks of own fabrication. The electrochemical technique polarization curve is used to provide insight into the performance of the cell and stack in operation. The design and materials of the components of the stack were established and the results demonstrate that for cells with catalyst layers deposited by electrospray the maximum power density of the single FC is higher than for cells prepared with the technique of dropping. The increase is significant, from 208 to 270 mW/cm2. Also, the optimization of the hot-pressing process of the MEA resulted in an improvement of the maximum power density up to 310 mW/cm2, while minimizing the canal-rib ratio improved the FC performance with about 16%. Compared to commercial PEMFCs, the performance however, is still low, which is related to the type of materials used.
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Submitted on : Wednesday, December 6, 2017 - 4:48:40 PM
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Raul Moreno Flores, Enrique Escobedo, David Antonio Gómez Jáuregui, Masha Smit, Victor Manuel Ramirez Rivera. Stack performance optimization of low power PEM Fuel Cell. 7th International Conference on Fundamentals & Development of Fuel Cells (FDFC 2017), Jan 2017, Stuttgart, Germany. ⟨hal-01657441⟩

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