Measurement of effective gas diffusion coefficients of catalyst layers of PEM fuel cells with a Loschmidt diffusion cell

In this work, using an in-house made Loschmidt diffusion cell, we measure the effective coefficient of dry gas (O 2–N 2) diffusion in cathode catalyst layers of PEM fuel cells at 25 °C and 1 atmosphere. The thicknesses of the catalyst layers under investigation are from 6 to 29 μm. Each catalyst lay...

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Veröffentlicht in:	Journal of power sources 2011-01, Vol.196 (2), p.674-678
Hauptverfasser:	Shen, Jun, Zhou, Jianqin, Astrath, Nelson G.C., Navessin, Titichai, Liu, Zhong-Sheng (Simon), Lei, Chao, Rohling, Jurandir H., Bessarabov, Dmitri, Knights, Shanna, Ye, Siyu
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Catalysts Cathode catalyst layer Deposition Diffusion Diffusion cells Diffusion layers Direct energy conversion and energy accumulation Effective gas diffusion coefficient Electrical engineering. Electrical power engineering Electrical power engineering Electrochemical conversion: primary and secondary batteries, fuel cells Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fuel cells Gas diffusion Knudsen effect Loschmidt diffusion cell PEM fuel cells Porosity
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