TY - GEN
T1 - Evaluation of gas diffusion performance in wet GDL with 3D pore network model
AU - Inoue, G.
AU - Matsukuma, Y.
AU - Minemoto, M.
PY - 2009
Y1 - 2009
N2 - It is important to investigate the two-phase condition in PEFC gas diffusion layer (GDL). In this study, the simulated GDL structures, such as carbon paper and carbon cloth, were developed by numerical analysis including the random orientation of carbon fibers and binders. And detailed structural estimation was carried out. Pore size distribution, electrical resistivity and tortuosity were calculated, and these values almost agreed with actual measurement values. Furthermore, in order to calculated two-phase condition in GDL, 3D pore network model based on an actual heterogeneous structure was developed by improving our past networking method. And the accumulating liquid water condition and the O2 gas diffusion performance of each GDL structure were compared on the water permeable condition. As the results, the relative diffusion coefficient models between wet and dry condition of each GDL were obtained by these calculations.
AB - It is important to investigate the two-phase condition in PEFC gas diffusion layer (GDL). In this study, the simulated GDL structures, such as carbon paper and carbon cloth, were developed by numerical analysis including the random orientation of carbon fibers and binders. And detailed structural estimation was carried out. Pore size distribution, electrical resistivity and tortuosity were calculated, and these values almost agreed with actual measurement values. Furthermore, in order to calculated two-phase condition in GDL, 3D pore network model based on an actual heterogeneous structure was developed by improving our past networking method. And the accumulating liquid water condition and the O2 gas diffusion performance of each GDL structure were compared on the water permeable condition. As the results, the relative diffusion coefficient models between wet and dry condition of each GDL were obtained by these calculations.
UR - http://www.scopus.com/inward/record.url?scp=77649239573&partnerID=8YFLogxK
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U2 - 10.1149/1.3210708
DO - 10.1149/1.3210708
M3 - Conference contribution
AN - SCOPUS:77649239573
SN - 9781566777384
T3 - ECS Transactions
SP - 1519
EP - 1527
BT - ECS Transactions -Proton Exchange Membrane Fuel Cells 9
T2 - 9th Proton Exchange Membrane Fuel Cell Symposium (PEMFC 9) - 216th Meeting of the Electrochemical Society
Y2 - 4 October 2009 through 9 October 2009
ER -