Impact of Interfacial Water Transport in PEMFCs on Cell Performance

Kotaka, Toshikazu; Tabuchi, Yuichiro; Pasaogullari, Ugur; Wang, Chaoyang

doi:10.1016/j.electacta.2014.08.148

Cited by 58 publications

(37 citation statements)

References 34 publications

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“…So a PEMFC with the channels downwards performances better than that with channels under other directions. These results match those in both experimental and computational works [4,12,15,19].…”

Section: Effect Of the Air And Water Inlet Velocitysupporting

confidence: 90%

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A numerical investigation on the effects of water inlet location and channel surface properties on water transport in PEMFC cathode channels

Cai

Yang

Sui

et al. 2016

International Journal of Hydrogen Energy

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Section: Effect Of the Air And Water Inlet Velocitysupporting

confidence: 90%

“…Banerjee et al Polverino et al [11] proposed a numerical model of a droplet growing on the gas diffusion layer (GDL) surface is to describe the interaction between droplet and gas flow. Kotaka et al [12] studied the impact of wettability of bipolar plate on water transport. Ref.…”

Section: Introductionmentioning

confidence: 99%

A numerical investigation on the effects of water inlet location and channel surface properties on water transport in PEMFC cathode channels

Cai

Yang

Sui

et al. 2016

International Journal of Hydrogen Energy

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“…Numerical modelling [8][9][10][11][12][13] predicted liquid water saturation and transport in the GDL with varying MPLs parameters including thickness, porosity and hydrophobicity, which contributed to understanding of intrinsic behavior of liquid water. Our previous works using synchrotron 14 and neutron radiography 15 support the concept that the MPL reduces water saturation between the CL and the substrate.…”

mentioning

confidence: 78%

Synchrotron Investigation of Microporous Layer Thickness on Liquid Water Distribution in a PEM Fuel Cell

Lee

Yip

Antonacci

et al. 2015

J. Electrochem. Soc.

105

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Synchrotron X-ray radiography was utilized to visualize the liquid water distribution in a fuel cell with an active area of 0.48 cm 2 with an effective spatial resolution of 10 μm. Water content was measured in the gas diffusion layers (GDLs), where microporous layer (MPL) thicknesses ranged between 0 and 150 μm. The distribution of liquid water in a substrate-free polymer electrolyte membrane (PEM) fuel cell with a 50 μm-thick MPL was also determined. It was observed that the presence of an MPL significantly reduced the water content at the interfacial region between the catalyst layer and GDL, and increasing the thickness of the MPL led to a reduction of liquid water accumulation at the interface between the substrate and MPL.

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“…Neutron radiography is highly sensitive to liquid water in PEM fuel cell studies due to the high attenuation caused by hydrogen-containing atoms. This technique has therefore been very useful in liquid water transport research [30][31][32][33][34][35][36][37]. Neutron-based PEM fuel cell studies are generally limited to spatial resolutions of 25 μm at temporal resolutions of 5.4 s [25].…”

Section: Visualizations Of Liquid Water Saturationmentioning

confidence: 99%

Liquid water saturation and oxygen transport resistance in polymer electrolyte membrane fuel cell gas diffusion layers

Muirhead

Banerjee

George

et al. 2018

Electrochimica Acta

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In this thesis, the relative humidity (RH) of the cathode reactant gas was investigated as a factor which influences gas diffusion layer (GDL) liquid water accumulation and mass transport-related efficiency losses over a range of operating current densities in a polymer electrolyte membrane (PEM) fuel cell. Limiting current measurements were used to characterize fuel cell oxygen transport resistance while simultaneous measurements of liquid water accumulation were conducted using synchrotron X-ray radiography. GDL porosity distributions were characterized with micro-computed tomography (μCT). The work presented here can be used by researchers to develop improved numerical models to predict GDL liquid water accumulation and to inform the design of next-generation GDL materials to mitigate mass transport-related efficiency losses. This work also contributes an extensive set of concurrent performance and liquid water visualization data to the PEM fuel cell field that can be used for validating multiphase transport models.iii

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Impact of Interfacial Water Transport in PEMFCs on Cell Performance

Cited by 58 publications

References 34 publications

A numerical investigation on the effects of water inlet location and channel surface properties on water transport in PEMFC cathode channels

A numerical investigation on the effects of water inlet location and channel surface properties on water transport in PEMFC cathode channels

Synchrotron Investigation of Microporous Layer Thickness on Liquid Water Distribution in a PEM Fuel Cell

Liquid water saturation and oxygen transport resistance in polymer electrolyte membrane fuel cell gas diffusion layers

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