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Hydrogen and Fuel Cells
Authored by 40 of the most prominent and renowned international scientists from academia, industry, institutions and government, this handbook explores mature, evolving technologies for a clean, economically viable alternative to non-renewable energy. In so doing, it includes how hydrogen can be safely produced, stored, transported and utilized, while also covering such broader topics as the environmental impact, education and regulatory developments.
Electrochemical Power Sources: Fundamentals, Systems, and Applications
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 topi...
Hydrogen Technologies
Hydrogen technologies are key for achieving a carbon-neutral economy; these offer solutions for the further expansion of renewable energy supplies, climate-neutral industry processes and sustainable mobility. For Germany and Europe alike, they present an opportunity to maintain industrial value creation, expand export opportunities and secure technological sovereignty. In this book, the Fraunhofer-Gesellschaft presents the knowledge and experience it has acquired along the entire value chain of the hydrogen economy. This encompasses materials and system development, production, system upscaling, energy sector applications, emission-intensive industry processes and mobility, as well as the practical, overarching issues of safety, standardization and service life.
Modelling and experimental testing of an innovative Sabatier reactor for a Power-to-Gas plant.
The scope of this dissertation is the development of a state observer for Power-to-Gas (PtG) plants. A physical performance model of an innovative reactor concept for different operation conditions has been developed and implemented in Matlab-Simulink. Experiments in a lab-scale PtG plant are used to validate the model; a comparison between the experimental and modelled data is presented. The experiments cover a wide temperature range, different operating pressures and inlet volumetric flows. Furthermore, experimental runs are carried out to determine the experimental value of the kinetic parameters, namely the activation energy (Ea), the pre-exponential factor of the Arrhenius form (A) and an empirical coefficient (n). The state observer predicts the performance of the reactor for a specific operating point and allows to identify a decrease of the reactor performance, such an identification of a system state leads to maintenance or modifications in the operating control.
Physically based Impedance Modelling of Lithium-Ion Cells
In this book, a new procedure to analyze lithium-ion cells is introduced. The cells are disassembled to analyze their components in experimental cell housings. Then, Electrochemical Impedance Spectroscopy, time domain measurements and the Distribution function of Relaxation Times are applied to obtain a deep understanding of the relevant loss processes. This procedure yields a notable surplus of information about the electrode contributions to the overall internal resistance of the cell.
Electrochemical Energy Storage for Renewable Sources and Grid Balancing
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 l...
Electrochemical Technologies for Hydrogen Production
The papers included in this issue of ECS Transactions were originally presented in the symposium ¿Electrochemical Technologies for Hydrogen Production¿, held during the 217th meeting of The Electrochemical Society, in Vancouver, Canada, from April 25 to 30, 2010.
PEM Electrolysis for Hydrogen Production
An ever-increasing dependence on green energy has brought on a renewed interest in polymer electrolyte membrane (PEM) electrolysis as a viable solution for hydrogen production. While alkaline water electrolyzers have been used in the production of hydrogen for many years, there are certain advantages associated with PEM electrolysis and its relevance to renewable energy sources. PEM Electrolysis for Hydrogen Production: Principles and Applications discusses the advantages of PEM electrolyzers over alkaline electrolyzers, presents the recent advances of hydrogen PEM fuel cells accelerating the large-scale commercialization of PEM electrolysis, and considers the challenges that must be address...
