Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Kookil Han"'
Publikováno v:
Korean Journal of Chemical Engineering. 36:299-304
This study proposes an in situ accelerated stress test of a gas diffusion layer (GDL) at a gas-solution-electrode triple phase boundary to individually examine electrochemical and mechanical GDL aging for the first time. Electrochemical GDL stability
Autor:
Kookil Han, Stéphane Chevalier, Hang Liu, Nan Ge, James Hinebaugh, Aimy Bazylak, Daniel Muirhead, Jongmin Lee, Michael G. George, Rupak K. Banerjee
Publikováno v:
International Journal of Hydrogen Energy. 42:29472-29483
In this study, the impacts of relative humidity on liquid water accumulation and mass transport resistance at high current densities were investigated for polymer electrolyte membrane (PEM) fuel cell cathode gas diffusion layers (GDLs). Through-plane
Publikováno v:
Applied Energy. 175:212-217
The effect of the clamping pressure and the relative humidity on gas crossover is studied in this research. It is central to this paper that the effect of the operating parameters on the hydrogen crossover is analyzed for various current densities. T
Publikováno v:
ECS Transactions. 65:45-49
The crossover is an inevitable phenomenon caused by the porosity of the membrane. Through this, not only protons, but also gases such as hydrogen, oxygen and nitrogen can permeate to opposite side and this causes the severe durability problem. Despit
Autor:
Ronnie Yip, Jongmin Lee, Bo Ki Hong, Hang Liu, Aimy Bazylak, Kookil Han, Rupak K. Banerjee, Stéphane Chevalier
Publikováno v:
Journal of Electrochemical Energy Conversion and Storage. 15
This work presents a comparison between carbon felt-type and paper-type gas diffusion layers (GDLs) for polymer electrolyte membrane (PEM) fuel cells in terms of the similarities and the differences between their microstructures and the corresponding
Publikováno v:
Renewable Energy. 69:356-364
The effects of the anisotropic bending stiffness of gas diffusion layers (GDLs) on the performance of polymer electrolyte membrane fuel cells with metallic bipolar plates (MBPs), having different channel depths, are investigated. The current–voltag
Publikováno v:
Transactions of the Korean hydrogen and new energy society. 24:311-319
A clear understanding on cell voltage-reversal behavior due to local hydrogen starvation in a stack is of paramount importance to operate the fuel cell vehicle (FCV) stably since it affects significantly the cell performance and durability. In the pr
Publikováno v:
International Journal of Hydrogen Energy. 37:11921-11933
A correlation between anisotropic bending stiffness of a gas diffusion layer (GDL) and land/channel width ratios of metallic bipolar plates (MBPs) in polymer electrolyte membrane fuel cells has been systematically investigated. I – V performances o
Publikováno v:
International Journal of Hydrogen Energy. 36:12452-12464
The effects of gas diffusion layer’s (GDL’s) anisotropic bending stiffness on the degradation behavior of polymer electrolyte membrane fuel cells have been investigated under freezing conditions. We have prepared GDL sheet samples such that the h
Publikováno v:
International Journal of Hydrogen Energy. 36:9916-9925
The clamping pressure of polymer electrolyte membrane fuel cells for vehicle applications should be typically high enough to minimize contact resistance. However, an excessive compression pressure may cause a durability problem. In this study, the ef