Pem Fuel Cell Electrocatalysts and Catalyst Layers: Fundamentals and Applications

ISBN-13: 9781848009356 / Angielski / Twarda / 2008 / 1160 str.

Jiujun Zhang

Opis

Proton exchange membrane (PEM) fuel cells, including H₂/O₂ (air) and methanol/O₂ (air) fuel cells, are promising clean energy converting devices with high efficiency and low to zero emissions. Such power sources can be used in transportation, stationary, portable and micro power applications. The key components of these fuel cells are catalysts and catalyst layers. PEM Fuel Cell Electrocatalysts and Catalyst Layers covers all of the fundamental aspects and applications of this field. The opening chapters introduce the essential topics on electrochemical theory and fuel cell catalysis, including: electrode thermodynamics, kinetics, and mass transfer; electrode/electrolyte interface electrocatalysis; electrocatalytic reactions, including O₂ reduction and H₂/CH₃OH oxidations; quantum chemistry simulations of catalyst activity; catalyst contamination; spectroscopic methods for catalysis research; porous gas electrode theory; and catalyst layers and modeling. Later chapters investigate the synthesis, characterization, and activity validation of PEM fuel cell catalysts. All fuel cell related catalysts are reviewed, including noble and non-noble catalysts and their preparation/performance. Further chapters describe in detail the integration of the electrocatalyst/catalyst layers into the fuel cell, and their performance validation, including; catalyst layer structure function and optimization, catalyst degradation and diagnosis, and strategies to mitigate the failure modes. PEM Fuel Cell Electrocatalysts and Catalyst Layers provides a comprehensive, in-depth survey of PEM fuel cell electrocatalysts and catalyst layers, presented by internationally renowned fuel cell scientists. Researchers and engineers in the fuel cell industry will find this book a valuable resource, as will students of electrochemical engineering and catalyst synthesis.

Spis treści

PEM Fuel Cell Fundamentals

Electrocatalytic Oxygen Reduction Reaction

Electrocatalytic H2 Oxidation Reaction

Electrocatalytic Oxidation of Methanol, Ethanol and Formic Acid

Application of First Principles Methods in the Study of Fuel Cell Air-Cathode Electrocatalysis

Catalyst Contamination in PEM Fuel Cells

PEM Fuel Cell Catalyst Layers and MEAs

Catalyst Layer Modeling: Structure, Properties and Performance

Catalyst Synthesis Techniques

Physical Characterization of Electrocatalysts

Electrochemical Methods for Catalyst Activity Evaluation

Combinatorial Methods for PEM Fuel Cell Electrocatalysts

Platinum-based Alloy Catalysts for PEM Fuel Cells

Nanotubes, Nanofibers and Nanowires as Supports for Catalysts

Non-noble Electrocatalysts for the PEM Fuel Cell Oxygen Reduction Reaction

CO-tolerant Catalysts

Reversal-tolerant Catalyst Layers

High-temperature PEM Fuel Cell Catalysts and Catalyst Layers

Conventional Catalyst Ink, Catalyst Layer and MEA Preparation

Spray-based and CVD Processes for Synthesis of Fuel Cell Catalysts and Thin Catalyst Layers

Catalyst Layer/MEA Performance Evaluation

Catalyst Layer Composition Optimization

Catalyst Layer Degradation, Diagnosis and Failure Mitigation

O autorze

Dr Jiujun Zhang is a Senior Research Officer and PEM Catalysis Core Competency Leader at the National Research Council of Canada Institute for Fuel Cell Innovation (NRC-IFCI). Dr Zhang has over twenty-six years of R&D experience in theoretical and applied electrochemistry, including over twelve years of fuel cell R&D (among these six years at Ballard Power Systems and four years at NRC-IFCI), and three years of electrochemical sensor experience. Dr Zhang holds seven adjunct professorships, including one at the University of Waterloo and one at the University of British Columbia. His research is based on: low/non-Pt cathode catalyst development with long-term stability for catalyst cost reduction; preparation of novel material-supported Pt catalysts through ultrasonic spray pyrolysis; catalyst layer/cathode structure; fundamental understanding through first principles theoretical modeling; catalyst layer characterization and electrochemical evaluation; and preparation of cost-effective MEAs for fuel cell testing and evaluation. Dr Zhang has co-authored more than 140 research papers published in refereed journals and holds over ten US patents. He has also produced in excess of seventy industrial technical reports. Dr Zhang is an active member of The Electrochemical Society, the International Society of Electrochemistry, and the American Chemical Society.