TY - GEN
T1 - MASS TRANSFER ANALYSIS OF MICROPOROUS LAYERS FOR POLYMER ELECTROLYTE FUEL CELLS USING PORE NETWORK MODEL
AU - Nakajima, Hironori
AU - Iwasaki, Shintaro
AU - Kitahara, Tatsumi
N1 - Funding Information:
The authors are indebted to graduate students, Messrs. Yuhang Liu, Kentaro Harano, Yuki Monde, and Dingfeng Chen for help in the modeling and experiment. Thanks are offered to Professor Kohei Ito of Kyushu University for valuable discussions. The authors acknowledge Ms. Chie Uryu of the International Research Center for Hydrogen Energy, Kyushu University for operating the FIB-SEM. SEM and X-ray CT observations were performed at the Center of Advanced Instrumental Analysis, Kyushu University with the help of Ms. Akiko Inada of the Center for Co-Evolutional Social Systems, Kyushu University.
Publisher Copyright:
© 2022 Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2. All rights reserved.
PY - 2022
Y1 - 2022
N2 - Liquid water accumulated in the catalyst layer and gas diffusion layer (GDL) of a polymer electrolyte fuel cell (PEFC, PEMFC) results in performance deterioration due to inhibition of transport of the reactant oxygen in the cathode (Flooding). To enhance the drainage in the GDL, the application of a microporous layer (MPL) is effective to the catalyst layer side of the GDL substrate. To elucidate the effects of two-phase flow on the oxygen transport in an MPL for its optimized designs, we model three-dimensional porous structures of in-house MPLs with pore network model (PNM) for convective air permeation and oxygen diffusion. Pore diameter distribution derived by a focused ion beam scanning electron microscope is employed in the PNM. Air permeation measurements combined with oxygen diffusion measurements with changing liquid saturation by using gas chromatography validate the model.
AB - Liquid water accumulated in the catalyst layer and gas diffusion layer (GDL) of a polymer electrolyte fuel cell (PEFC, PEMFC) results in performance deterioration due to inhibition of transport of the reactant oxygen in the cathode (Flooding). To enhance the drainage in the GDL, the application of a microporous layer (MPL) is effective to the catalyst layer side of the GDL substrate. To elucidate the effects of two-phase flow on the oxygen transport in an MPL for its optimized designs, we model three-dimensional porous structures of in-house MPLs with pore network model (PNM) for convective air permeation and oxygen diffusion. Pore diameter distribution derived by a focused ion beam scanning electron microscope is employed in the PNM. Air permeation measurements combined with oxygen diffusion measurements with changing liquid saturation by using gas chromatography validate the model.
UR - http://www.scopus.com/inward/record.url?scp=85147190252&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85147190252&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85147190252
T3 - Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2
SP - 669
EP - 671
BT - Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference
A2 - Dincer, Ibrahim
A2 - Colpan, Can Ozgur
A2 - Ezan, Mehmet Akif
PB - International Association for Hydrogen Energy, IAHE
T2 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2, WHEC 2022
Y2 - 26 June 2022 through 30 June 2022
ER -
