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The focus of this book is on electrochemical hydrogen technologies and fuel cell technologies in particular. Precipitated by the energy crisis in 1973, intensive work has been done world-wide on hydrogen technologies. Water electrolysis was the main objective. The steady increase of combustion of fossil fuels, with the ensuing CO 2 content in the environment, has led to a greater need to change the use of energy conversion and consumption. Hydrogen, based on nuclear and renewable energies, could become indispensable for energy storage and long range transport. Only electrolysis allows the conversion of electrical energy into hydrogen with high efficiency. Prior to the introduction of non-polluting but very expensive methods for energy harvesting and conversion, it is first necessary to ascertain how to save energy and to refurbish energy conversion systems to obtain the highest efficiencies with the lowest CO 2 emissions, e.g. in large scale electricity generation.Collected here in 7 chapters are the contributions of internationally known electrochemical engineers who work actively in this rapidly developing field. The relevant work reviewed extends from fundamental findings in the field of technical electrocatalysis of hydrogen and oxygen reactions to water electrolysis, chlor-alkali electrolysis (which is still practically the most important process for electrolytic hydrogen generation), thermochemical hybrid cycles and on finally to fuel cells. The latter in their advanced form of heavy, high-temperature cells promise to become the basis for highly efficient electric power plants for converting the chemical energy of fossil fuels, or hydrogen from fossil combustibles like methane, or coal into electricity with system efficiencies greater than 55%.The material presented in this volume should prove of immense value to electrochemical engineers, producers of electrolyzers and fuel cells, electrical engineers and political/technical decision makers. It will also be of use to academic teachers lecturing on electrochemistry and advanced technologies.
This book provides a comprehensive picture of the various routes to use electricity to produce hydrogen using electrochemical science and technology.
Hydrogen Electrochemical Production presents different avenues of hydrogen production for energy applications, including current developments and future perspectives, using an interdisciplinary approach. Part of the Hydrogen Energy and Fuel Cell Primers series, the volume synthesizes information from many sources, making it a useful reference for industry professionals, researchers and graduate students. The book examines various methods, explaining their advantages and limitations. The water electrolysis reaction and systems are explored from different points of view, including an assessment of state-of-the-art technologies. Alternatives to water for feeding the electrolysis cell anode and for electrochemical hydrogen production (such as alcohol or other compounds from biomass) are discussed. - Explores current technology developments and future perspectives of hydrogen production for energy applications - Examines the state-of-the art technology in electrolysis reaction and systems and discusses the advantages and limitations of various methods - Covers alternatives to water for feeding electrolysis cell anode, including alcohol and other compounds from biomass
Provides a comprehensive practical review of the new technologies used to obtain hydrogen more efficiently via catalytic, electrochemical, bio- and photohydrogen production. Hydrogen has been gaining more attention in both transportation and stationary power applications. Fuel cell-powered cars are on the roads and the automotive industry is demanding feasible and efficient technologies to produce hydrogen. The principles and methods described herein lead to reasonable mitigation of the great majority of problems associated with hydrogen production technologies. The chapters in this book are written by distinguished authors who have extensive experience in their fields, and readers will have a chance to compare the fundamental production techniques and learn about the pros and cons of these technologies. The book is organized into three parts. Part I shows the catalytic and electrochemical principles involved in hydrogen production technologies. Part II addresses hydrogen production from electrochemically active bacteria (EAB) by decomposing organic compound into hydrogen in microbial electrolysis cells (MECs). The final part of the book is concerned with photohydrogen generation. Recent developments in the area of semiconductor-based nanomaterials, specifically semiconductor oxides, nitrides and metal free semiconductor-based nanomaterials for photocatalytic hydrogen production are extensively discussed.
Electrochemical Power Sources: Fundamentals, Systems, and Applications: Hydrogen Production by Water Electrolysis offers a comprehensive overview about different hydrogen production technologies, including their technical features, development stage, recent advances, and technical and economic issues of system integration. Allied processes such as regenerative fuel cells and sea water electrolysis are also covered. For many years hydrogen production by water electrolysis was of minor importance, but research and development in the field has increased significantly in recent years, and a comprehensive overview is missing. This book bridges this gap and provides a general reference to the topic.Hydrogen production by water electrolysis is the main technology to integrate high shares of electricity from renewable energy sources and balance out the supply and demand match in the energy system. Different electrochemical approaches exist to produce hydrogen from RES (Renewable Energy Sources). - Covers the fundamentals of hydrogen production by water electrolysis - Reviews all relevant technologies comprehensively - Outlines important technical and economic issues of system integration - Includes commercial examples and demonstrates electrolyzer projects
Hydrogen, Batteries and Fuel Cells provides the science necessary to understand these important areas, considering theory and practice, practical problem-solving, descriptions of bottlenecks, and future energy system applications. The title covers hydrogen as an energy carrier, including its production and storage; the application and analysis of electrochemical devices, such as batteries, fuel cells and electrolyzers; and the modeling and thermal management of momentum, heat, mass and charge transport phenomena. This book offers fundamental and integrated coverage on these topics that is critical to the development of future energy systems. - Combines coverage of hydrogen, batteries and fuel cells in the context of future energy systems - Provides the fundamental science needed to understand future energy systems in theory and practice - Gives examples of problems and solutions in the use of hydrogen, batteries and fuel cells - Considers basic issues in understanding hydrogen and electrochemical devices - Describes methods for modeling and thermal management in future energy systems
Hydrogen storage is considered a key technology for stationary and portable power generation especially for transportation. This volume covers the novel technologies to efficiently store and distribute hydrogen and discusses the underlying basics as well as the advanced details in hydrogen storage technologies. The book has two major parts: Chemical and electrochemical hydrogen storage and Carbon-based materials for hydrogen storage. The following subjects are detailed in Part I: Multi stage compression system based on metal hydrides Metal-N-H systems and their physico-chemical properties Mg-based nano materials with enhanced sorption kinetics Gaseous and electrochemical hydrogen storage in the Ti-Z-Ni Electrochemical methods for hydrogenation/dehydrogenation of metal hydrides In Part II the following subjects are addressed: Activated carbon for hydrogen storage obtained from agro-industrial waste Hydrogen storage using carbonaceous materials Hydrogen storage performance of composite material consisting of single walled carbon nanotubes and metal oxide nanoparticles Hydrogen storage characteristics of graphene addition of hydrogen storage materials Discussion of the crucial features of hydrogen adsorption of nanotextured carbon-based materials
Photoelectrochemical Hydrogen Production describes the principles and materials challenges for the conversion of sunlight into hydrogen through water splitting at a semiconducting electrode. Readers will find an analysis of the solid state properties and materials requirements for semiconducting photo-electrodes, a detailed description of the semiconductor/electrolyte interface, in addition to the photo-electrochemical (PEC) cell. Experimental techniques to investigate both materials and PEC device performance are outlined, followed by an overview of the current state-of-the-art in PEC materials and devices, and combinatorial approaches towards the development of new materials. Finally, the economic and business perspectives of PEC devices are discussed, and promising future directions indicated. Photoelectrochemical Hydrogen Production is a one-stop resource for scientists, students and R&D practitioners starting in this field, providing both the theoretical background as well as useful practical information on photoelectrochemical measurement techniques. Experts in the field benefit from the chapters on current state-of-the-art materials/devices and future directions.
Introduces the field of hydrogen technology and explains the basic chemistry underlying promising and innovative new technologies This new and completely updated edition of Introduction to Hydrogen Technology explains, at an introductory level, the scientific and technical aspects of hydrogen technology. It incorporates information on the latest developments and the current research in the field, including: new techniques for isolating and storing hydrogen, usage as a fuel for automobiles, residential power systems, mobile power systems, and space applications. Introduction to Hydrogen Technology, Second Edition features classroom-tested exercises and sample problems. It details new economical methods for isolating the pure hydrogen molecule. These less expensive methods help make hydrogen fuel a very viable alternative to petroleum-based energy. The book also adds a new chapter on hydrogen production and batteries. It also provides in-depth coverage of the many technical hurdles in hydrogen storage. The developments in fuel cells since the last edition has been updated. Offers new chapters on hydrogen production, storage, and batteries Features new sections on advanced hydrogen systems, new membranes, greenhouse gas sensors and updated technologies involving solar and wind energies Includes problems at the end of the Chapters, as well as solutions for adopters This book is an introduction to hydrogen technology for students who have taken at least one course in general chemistry and calculus; it will also be a resource book for scientists and researchers working in hydrogen-based technologies, as well as anyone interested in sustainable energy.
Electricity from renewable sources of energy is plagued by fluctuations (due to variations in wind strength or the intensity of insolation) resulting in a lack of stability if the energy supplied from such sources is used in 'real time'. An important solution to this problem is to store the energy electrochemically (in a secondary battery or in hydrogen and its derivatives) and to make use of it in a controlled fashion at some time after it has been initially gathered and stored. Electrochemical battery storage systems are the major technologies for decentralized storage systems and hydrogen is the only solution for long-term storage systems to provide energy during extended periods of low wind speeds or solar insolation. Future electricity grid design has to include storage systems as a major component for grid stability and for security of supply. The technology of systems designed to achieve this regulation of the supply of renewable energy, and a survey of the markets that they will serve, is the subject of this book. It includes economic aspects to guide the development of technology in the right direction. - Provides state-of-the-art information on all of the storage systems together with an assessment of competing technologies - Features detailed technical, economic and environmental impact information of different storage systems - Contains information about the challenges that must be faced for batteries and hydrogen-storage to be used in conjunction with a fluctuating (renewable energy) power supply