Probing water transport in polymer electrolyte fuel cells with neutron radiography

被引：24

作者：

Cho, Kyu Taek ^{[1
,2
,3
]}

Turhan, Ahmet ^{[1
,2
]}

Lee, Jong Hyun ^{[3
]}

Brenizer, Jack S. ^{[1
,2
]}

Heller, Arthur K. ^{[1
,2
]}

Shi, Liang ^{[1
,2
]}

Mench, Matthew M. ^{[1
,2
]}

机构：

[1] Penn State Univ, Dept Mech & Nucl Engn, Radiat Sci & Engn Ctr, University Pk, PA 16802 USA

[2] Penn State Univ, Fuel Cell Dynam & Diagnost Lab, University Pk, PA 16802 USA

[3] Hyundai Motor Co, Div Res & Dev, Yongin 446912, South Korea

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2009年 / 605卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Polymer electrolyte fuel cell; Gas purge; Neutron radiography; Heavy water; High frequency resistance; REMOVAL; PERFORMANCE; DEGRADATION; STORAGE; PEFC;

D O I：

10.1016/j.nima.2009.01.144

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In this work, the characteristic water removal from a full-sized fuel cell is analyzed with coolant-controlled thermal boundary conditions. High frequency resistance (HFR) along with neutron radiography (NR) is used to elucidate the characteristic variation of water content in the membrane and in other components in the fuel cell during operation and purge, respectively. During operation, the variation in stored water content was also investigated for different relative humidity (RH) and power conditions. The effect of purge was analyzed by shutting the current off and by holding the reactant flow rate constant during polarization, and the change of water content was investigated for the whole fuel cell and the membrane, respectively. Interestingly, it was determined that water removal from the membrane can be, to some extent, separately controlled from the flow field and porous media by utilizing proper purge conditions. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：119 / 122

页数：4

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