Considering Photon Scattering and Harmonics for Synchrotron X-ray Radiographic Imaging of Polymer Electrolyte Membrane Fuel Cells

被引：4

作者：

Ge, Nan ^{[1
]}

George, Michael G. ^{[1
]}

Lee, Jongmin ^{[1
]}

Muirhead, Daniel ^{[1
]}

Chevalier, Stephane ^{[1
]}

Banerjee, Rupak ^{[1
]}

Liu, Hang ^{[1
]}

Wysokinski, Tomasz W. ^{[2
]}

Belev, George ^{[2
]}

Webb, M. Adam ^{[2
]}

Zhu, Ning ^{[2
]}

Bazylak, Aimy ^{[1
]}

机构：

[1] Univ Toronto, Fac Appl Sci & Engn, Thermofluids Energy & Adv Mat TEAM Lab, Dept Mech & Ind Engn,Inst Sustainable Energy, Toronto, ON M5S 3G8, Canada

[2] Canadian Light Source, Saskatoon, SK S7N 2V3, Canada

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2017年 / 164卷 / 11期

基金：

加拿大自然科学与工程研究理事会; 加拿大健康研究院; 加拿大创新基金会;

关键词：

GAS-DIFFUSION LAYER; LIQUID WATER; MICROPOROUS LAYER; TRANSPORT; DISTRIBUTIONS; TOMOGRAPHY;

D O I：

10.1149/2.0231711jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We predicted the attenuated, undesired secondary scattered, and undesired harmonic components of measured X-ray intensities from synchrotron X-ray radiographic visualizations of liquid water in an operating polymer electrolyte membrane (PEM) fuel cell. The undesired secondary scattered component of the measured intensity increased as a function of the liquid water thickness (traversed by the X-ray beam). This increase in the secondary scattered component led to a decrease in the calibrated attenuation coefficient for liquid water, decreasing the accuracy of water quantification. We recommend calibrating the attenuated coefficient with a range of water thicknesses defined by the maximum expected water thickness present in the PEM fuel cell. The undesired harmonic component of the measured intensity also increased as a function of liquid water thickness, which led to a decrease in the accuracy of the measured liquid water thickness. (C) The Author(s) 2017. Published by ECS. All rights reserved.

引用

页码：E3215 / E3224

页数：10

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