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Chemcial Industry and Engineering 2017, Vol. 34 Issue (3) :80-87    DOI: 10.13353/j.issn.1004.9533.20151068
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Numerical Simulation on the Impacts of Catalyst Layer Thickness on Proton Exchange Membrane Fuel Cell (PEMFC)
Wang Na, Zhang Wen, Wang Yuxin
School of Chemical Engineering and Technology, Tianjin University, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science & Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, China

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Abstract 

The performance of proton exchange membrane fuel cell (PEMFC) with different cathode catalyst layer (CCL) thicknesses across the whole range of power output are simulated using a one-dimensional steady-state macro-homogeneous model. With the intention of keeping the proportions of all constituents in the CCL invariant,two different ways are chosen to change the CCL thickness. One is to alter the Pt mass loading per unit area of CCL. Another is to vary the Pt mass fraction of Pt/C catalyst particles. The result shows that the calculated best PEMFC performance corresponds to a thicker CCL. However, from the perspective of improving the utilization of catalyst, a thinner CCL for the former method and a thicker CCL for the latter method can ensure catalyst utilization higher. Under given conditions, the best CCL thickness in the sense of high power output holds within the entire operating window of output current.

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Wang Na
Zhang Wen
Wang Yuxin
Keywordsproton exchange membrane fuel cells;   cathode catalyst layer thickness;   platinum mass loading per unit area of the catalyst layer;   platinum mass percentage on Pt/C particles;   power output     
Received 2015-04-27;
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Wang Na, Zhang Wen, Wang Yuxin.Numerical Simulation on the Impacts of Catalyst Layer Thickness on Proton Exchange Membrane Fuel Cell (PEMFC)[J]  Chemcial Industry and Engineering, 2017,V34(3): 80-87
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