PEM Fuel Cells

PEM Fuel Cells

Theory and Practice

1st Edition - June 21, 2005

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  • Authors: Frano Barbir, Frano Barbir
  • eBook ISBN: 9780080455419

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Description

Fuel cells are electrochemical energy conversion devices that convert hydrogen and oxygen into water, producing electricity and heat in the process and providing fuel efficiency and reductions in pollutants. Demand for this technology is growing rapidly. Fuel cells are being commercialized for stationary and portable electricity generation, and as a replacement for internal combustion engines in automobiles. Proton Exchange Membrane (PEM) fuel cells in particular are experiencing an upsurge. They have high power density and can vary their output quickly to meet shifts in power demand. Until now, there has been little written about this important technology. This book lays the groundwork for fuel cell engineers, technicians and students. It covers the fundamental aspects of fuel cell design, electrochemistry of the technology, heat and mass transport, system design and applications to bring this technology to professionals at all levels.

Key Features

* Comprehensive guide for engineers, researchers and policymakers
* Covers theory and practice of PEM fuel cells
* Contains hundreds of original illustrations and real-life engineering examples

Readership

Engineers and scientists involved in fuel cell engineering; Graduate students in mechanical engineering and/or chemical engineering

Table of Contents

  • Foreward
    Preface and Acknowledgements

    1. Introductions
    1.1 What is a Fuel Cell?
    1.2 A Very Brief History of Fuel Cells
    1.3 Types of Fuel Cells
    1.4 How does a PEM Fuel Cell Work
    1.5 Why do we Need Fuel Cells
    1.6 Fuel Cell Applications
    2. Fuel Cell Basic Chemistry and Thermodynamics
    2.1 Basic Reactions
    2.2 Heat of Reaction
    2.3 Higher and Lower Heating Value of Hydrogen
    2.4 Theoretical Electrical Work
    2.5 Theoretical Fuel Cell Potential
    2.6 Effect of Temperature
    2.7 Theoretical Fuel Cell Efficiency
    2.8 Carnot Efficiency Myth
    2.9 Effect of Pressure
    2.10 Summary
    3. Fuel Cell Electrochemistry
    3.1 Electrode Kinetics
    3.2 Voltage Losses
    3.3 Cell Potential – Polarization Curve
    3.4 Distribution of Potential Across a Fuel Cell
    3.5 Sensitivity of Parameters in Polarization Curve
    3.6 Fuel Cell Efficiency
    3.7 Implications and Use of Fuel Cell Polarization Curve
    4. Main Cell Components, Materials Properties and Processes
    4.1 Cell Description
    4.2 Membrane
    4.3 Electrode
    4.4 Gas Diffusion Layer
    4.5 Bipolar Plates
    5. Fuel Cell Operating Conditions
    5.1 Operating Pressure
    5.2 Operating Temperature
    5.3 Reactants Flow Rates
    5.4 Reactants Humidity
    5.5 Fuel Cell Mass Balance
    5.6 Fuel Cell Energy Balance
    6. Stack Design
    6.1 Sizing of a Fuel Cell Strack
    6.2 Stack Configuration
    6.3 Uniform Distribution of Reactants to Each Cell
    6.4 Uniform Distribution of Reactants Inside Each Cell
    6.5 Heat Removal from a Fuel Cell Stack
    6.6 Stack Clamping
    7. Fuel Cell Modeling
    7.1 Theory and Governing Equations
    7.2 Modeling Domains
    7.3 Modeling Examples
    7.4 Conclusions
    8. Fuel Cell Diagnostics
    8.1 Polarization Curve
    8.2 Current Interrupt
    8.3 AC Impedance Spectroscopy
    8.4 Pressure Drop as a Diagnostic Tool
    8.5 Current Density Mapping
    8.6 Neutron Imaging
    9. Fuel Cell System Design
    9.1 Hydrogen-Oxygen Systems
    9.2 Hydrogen-Air Systems
    9.3 Fuel Cell Systems with Fuel Processor
    9.4 Electrical Subsystem
    9.5 System Efficiency
    10. Fuel Cell Applications
    10.1 Transportation Applications
    10.2 Stationary Power
    10.3 Backup Power
    10.4 Fuel Cells for Small Portable Power
    10.5 Regenerative Fuel Cells and Their Applications
    11. Fuel Cells and Hydrogen Economy
    11.1 Introduction
    11.2 Transitions in Energy Supply
    11.3 History of Hydrogen as Fuel
    11.4 Hydrogen Energy System
    11.5 Hydrogen Energy Technologies
    11.6 Predicting the Future
    11.7 Transition to Hydrogen Economy
    11.8 Coming Energy Revolution?
    11.9 Conclusions
    Index

Product details

  • No. of pages: 456
  • Language: English
  • Copyright: © Academic Press 2005
  • Published: June 21, 2005
  • Imprint: Academic Press
  • eBook ISBN: 9780080455419

About the Authors

Frano Barbir

Affiliations and Expertise

University of Split, Croatia; Board of Directors, International Hydrogen Association

Frano Barbir

Affiliations and Expertise

Connecticut Global Fuel Cell Center, University of Connecticut, Storrs, USA

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