Effect of cell compression on the water dynamics of a polymer electrolyte fuel cell using in-plane and through-plane in-operando neutron radiography

Visualization of dynamic three-dimensional water behavior in a PEFC stack was carried out by neutron CT using a neutron image intensifier for clarifying water effects on performances of a Polymer Electrolyte Fuel Cell (PEFC) stack. Neutron radiography system at JRR-3 in Japan Atomic Energy Agency was used. An operating stack with three cells based on Japan Automobile Research Institute standard was visualized. A consecutive CT reconstruction method by rotating the fuel stack continuously was developed by using a neutron image intensifier and a C-MOS high speed video camera. The dynamic water behavior in channels in the operating PEFC stack was clearly visualized 15 sec in interval by the developed dynamic neutron CT system. From the CT reconstructed images, evaluation of water amount in each cell was carried out. It was shown that the water distribution in each cell was correlated well with power generation characteristics in each cell.

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Flooding and performance of polymer electrolyte fuel cell, investigated by small-angle neutron scattering, neutron radiography and segmented electrode

Results in Physics ◽

10.1016/j.rinp.2018.11.082 ◽

2019 ◽

Vol 12 ◽

pp. 504-511 ◽

Cited By ~ 3

Author(s):

Satoru Ueda ◽

Satoshi Koizumi ◽

Yasuyuki Tsutsumi

Keyword(s):

Fuel Cell ◽

Neutron Scattering ◽

Polymer Electrolyte ◽

Small Angle ◽

Small Angle Neutron Scattering ◽

Neutron Radiography ◽

Polymer Electrolyte Fuel Cell ◽

And Performance ◽

Segmented Electrode

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Through-Plane Water Distribution in a Polymer Electrolyte Fuel Cell: Comparison of Numerical Prediction with Neutron Radiography Data

Journal of The Electrochemical Society ◽

10.1149/1.3498997 ◽

2010 ◽

Vol 157 (12) ◽

pp. B1878 ◽

Cited By ~ 33

Author(s):

Yun Wang ◽

Ken S. Chen

Keyword(s):

Fuel Cell ◽

Polymer Electrolyte ◽

Water Distribution ◽

Neutron Radiography ◽

Numerical Prediction ◽

Polymer Electrolyte Fuel Cell

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Dynamic Characteristics of Polymer Electrolyte Fuel Cell and Hydrogen Tank

2010 14th International Heat Transfer Conference, Volume 5 ◽

10.1115/ihtc14-23005 ◽

2010 ◽

Author(s):

Yun Wang

Keyword(s):

Fuel Cell ◽

Polymer Electrolyte ◽

Dynamic Characteristics ◽

Dynamic Models ◽

Reaction Rates ◽

Transport Processes ◽

Water Dynamics ◽

Polymer Electrolyte Fuel Cell ◽

Limiting Factors ◽

Electrochemical Double Layer

In this paper, we develop 3D dynamic models for polymer electrolyte fuel cells (PEFCs) and hydrogen tanks, respectively. The PEFC model considers the key components of a single PEFC and couples the various mechanisms that govern fuel cell transient including the electrochemical double-layer behavior, species transport, heat transfer, liquid water dynamics, and membrane water uptake. The hydrogen tank model includes a 3D description of the hydrogen discharging kinetics coupled with mass/heat transport in a LaNi5–based hydrogen tank. Efforts are made to discuss the dynamic characteristics of the PEFC and hydrogen tank together with the possible coupling of the two systems. Local electrochemical and hydride reaction rates, transport processes and associated limiting factors are investigated.

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