Cathode Discharge

Authored by: Herwig Robert Haas

PEM Fuel Cell Diagnostic Tools

Print publication date:  August  2011
Online publication date:  August  2011

Print ISBN: 9781439839195
eBook ISBN: 9781439839201
Adobe ISBN:

10.1201/b11100-9

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Abstract

7.1 Introduction

7.2 Principles and Essential Theory

Current Step, Closed-Volume, Mass Transport-Free Polarization

Current Step, Closed-Volume, Reactant Content Determination

Current Step, Closed-Volume, Reactant Diffusivity

Current Sweep, Constant Flow, Fast Transient Polarization

7.3 Instruments and Measurements

Fluid Streams

Load

Stack Size

Data Collection

Voltage Sensing

Preconditioning

Procedures

Data Analysis of V0+

7.4 Applications

Performance Loss Diagnostics of New Test Articles

Mass Transport-Free Polarization Curves for Model Input

Loss Analysis of Low-Performing Cells in Stack

Detection of Low MEA Hydration

Effect of Electrode Oxide Coverage on Performance

In Situ Measurement of Electrode Diffusivity in a Stack

7.5 Advantages and Limitations

7.6 Outlook

Quick and Semiquantitative Methods

Scientific Outlook

Acknowledgments

References

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