Biography:

One of their most recent publications is Analysis of transient response of a unit proton-exchange membrane fuel cell with a degraded gas diffusion layer. Which was published in journal International Journal of Hydrogen Energy.

More information about Junhyun Cho research including statistics on their citations can be found on their Copernicus Academic profile page.

Junhyun Cho's Articles: (2)

Analysis of transient response of a unit proton-exchange membrane fuel cell with a degraded gas diffusion layer

AbstractThe transient response characteristics and durability problems of proton-exchange membrane fuel cells are important issues for the application of PEM fuel cells to automotive systems. The gas diffusion layer is the key component of the fuel cell because it directly influences the mass transport mechanism. In this study, the effects of GDL degradation on the transient response of the PEM fuel cell are systematically studied using transient response analysis under different stoichiometric ratios and humidity conditions. With GDLs aged by the accelerated stress test, the effects of hydrophobicity and structural changes due to carbon loss in the GDL on the transient response of PEM fuel cells are determined. The cell voltage is measured according to the sudden current density change. The degraded GDLs that had uneven hydrophobicity distributions cause local water flooding inside the GDL and induce lower and unstable voltage responses after load changes.

Effect of the micro porous layer design on the dynamic performance of a proton exchange membrane fuel cell

Highlights•The capillary pressure gradient of a GDL affected the transient response of a PEMFC.•The dense MPL performed best at high humidity conditions.•The reverse capillary pressure gradient in the MPL performed best at low humidity.•The addition of less hydrophobic MPL exhibited better performance at low humidity.

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