Combined Coal Gasification And Akaline Water Electrolyzer For Hydrogen Production
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Combined Coal Gasification And Akaline Water Electrolyzer For Hydrogen Production
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Author : Munur Sacit Herdem
language : en
Publisher:
Release Date : 2013
Combined Coal Gasification And Akaline Water Electrolyzer For Hydrogen Production written by Munur Sacit Herdem and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
There have been many studies in the energy field to achieve different goals such as energy security, energy independence and production of cheap energy. The consensus of the general population is that renewable energy sources can be used on a short-term basis to compensate for the energy requirement of the world. However, the prediction is that fossil fuels will be used to provide the majority of energy requirements in the world at least on a short-term basis. Coal is one of the major fossil fuels and will be used for a long time because there are large coal reservoirs in the world and many products such as hydrogen, ammonia, and diesel can be produced using coal. In the present study, the performance of a clean energy system that combines the coal gasification and alkaline water electrolyzer concepts to produce hydrogen is evaluated through thermodynamic modeling and simulations. A parametric study is conducted to determine the effect of water ratio in coal slurry, gasifier temperature, effectiveness of carbon dioxide removal, and hydrogen recovery efficiency of the pressure swing adsorption unit on the system hydrogen production. In addition, the effects of different types of coals on the hydrogen production are estimated. The exergy efficiency and exergy destruction in each system component are also evaluated. Although this system produces hydrogen from coal, the greenhouse gases emitted from this system are fairly low.
Proceedings Of The Symposium On Industrial Water Electrolysis
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Author : Electrochemical Society. Industrial Electrolytic Division
language : en
Publisher: Princeton, N.J. : Electrochemical Society
Release Date : 1978
Proceedings Of The Symposium On Industrial Water Electrolysis written by Electrochemical Society. Industrial Electrolytic Division and has been published by Princeton, N.J. : Electrochemical Society this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Water categories.
Hydrogen Production Technologies
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Author : Mehmet Sankir
language : en
Publisher: John Wiley & Sons
Release Date : 2017-03-20
Hydrogen Production Technologies written by Mehmet Sankir and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-20 with Science categories.
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.
Hydrogen Manufacture By Electrolysis Thermal Decomposition And Unusual Techniques
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Author : M. S. Casper
language : en
Publisher: William Andrew
Release Date : 1978
Hydrogen Manufacture By Electrolysis Thermal Decomposition And Unusual Techniques written by M. S. Casper and has been published by William Andrew this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Science categories.
Green Hydrogen Production By Water Electrolysis
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Author : Junbo Hou
language : en
Publisher: CRC Press
Release Date : 2024-07-24
Green Hydrogen Production By Water Electrolysis written by Junbo Hou and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-07-24 with Technology & Engineering categories.
The world’s largest economies have set clear development plans for hydrogen energy. From an Economy, Energy, and Environment (3E) point of view, hydrogen energy can be considered an ideal technology for enabling the energy transition from fossil fuels, restructuring energy systems, securing national energy sources, accelerating carbon neutralization, and driving the development of technologies and industry. Green hydrogen production by water electrolysis is the key for hydrogen energy, and this book offers urgently needed guidance on the most important scientific fundamentals and practical applied technologies in this field. This book: • Details materials, electrochemistry, and mechanics. • Covers ALK, PEM, AEM, and SOEC water electrolysis, including fundamentals and applications. • Addresses trends, opportunities, and challenges. This comprehensive reference is aimed at engineers and scientists working on renewable and alternative energy to meet global energy demands and climate action goals.
Pem Water Electrolysis
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Author : Dmitri Bessarabov
language : en
Publisher: Academic Press
Release Date : 2018-08-04
Pem Water Electrolysis written by Dmitri Bessarabov and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-04 with Science categories.
PEM Water Electrolysis, a volume in the Hydrogen Energy and Fuel Cell Primers series presents the most recent advances in the field. It brings together information that has thus far been scattered in many different sources under one single title, making it a useful reference for industry professionals, researchers and graduate students. Volumes One and Two allow readers to identify technology gaps for commercially viable PEM electrolysis systems for energy applications and examine the fundamentals of PEM electrolysis and selected research topics that are top of mind for the academic and industry community, such as gas cross-over and AST protocols. The book lays the foundation for the exploration of the current industrial trends for PEM electrolysis, such as power to gas application and a strong focus on the current trends in the application of PEM electrolysis associated with energy storage. Presents the fundamentals and most current knowledge in proton exchange membrane water electrolyzers Explores the technology gaps and challenges for commercial deployment of PEM water electrolysis technologies Includes unconventional systems, such as ozone generators Brings together information from many different sources under one single title, making it a useful reference for industry professionals, researchers and graduate students alike
Engineered Thermally Sprayed Electrodes For Hydrogen Production By Alkaline Water Electrolysis
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Author : Maniya Aghasibeig
language : en
Publisher:
Release Date : 2016
Engineered Thermally Sprayed Electrodes For Hydrogen Production By Alkaline Water Electrolysis written by Maniya Aghasibeig and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Alkaline water electrolysis is one of the most promising methods for producing high purity hydrogen to be used as a clean and renewable energy carrier. However, due to the high costs of the electrolysers in addition to high energy consumption of the electrolysis process, this method is still not used for large scale hydrogen production in industrial applications. The costs associated with the materials and energy loss of this technology can be reduced by decreasing the hydrogen evolution overpotentials by using durable and inexpensive electrocatalysts with high intrinsic activities and large active surface areas. The main objective of this work is to manufacture cathode electrodes for the hydrogen evolution reaction (HER) with modified surface structures and large effective areas, using different thermal spray techniques. For this purpose, new methodologies for manufacturing the electrodes are introduced while the surface morphology of the electrodes is designed and engineered by the coating processes. Nickel is used as electrode material as it shows high electrocatalytic activity, has high stability in alkaline solutions and is relatively inexpensive compared to noble metals with the best activities. Suspension plasma spray (SPS), high velocity oxy-fuel (HVOF) and cold spray are introduced as novel methods for producing nickel electrodes for the HER. A combination of atmospheric and suspension plasma spray, with optimized parameters toward enhancement of the electrode surface area, is effectively used for development of multiscale electrode surface structures with micron and nanosized features. In addition, the surface texture of the electrodes is engineered by deposition of three-dimensional fin arrays by employing mesh screens when either the combined atmospheric and suspension plasma spray or HVOF processes were used. For these electrodes the surface area was mainly enhanced by deposition of the particles at normal and off-normal angles. The produced hierarchical multiscale electrode structures enhanced the electrocatalytic activity for the HER by increasing the accessibility of the electrode surface to the electrolyte besides facilitating the hydrogen bubble detachment. Finally, cold spray was used to manufacture the electrodes with large activities by peening of the electrode surface by the solid-state nickel particles during the deposition process. The activity of the electrodes was enhanced by increasing the surface defects and changing the electronic structure of the electrodes induced by the peening effect.
Hydrogen Production
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Author : Agata Godula-Jopek
language : en
Publisher: John Wiley & Sons
Release Date : 2015-06-29
Hydrogen Production written by Agata Godula-Jopek and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-29 with Science categories.
Covering the various aspects of this fast-evolving field, this comprehensive book includes the fundamentals and a comparison of current applications, while focusing on the latest, novel achievements and future directions. The introductory chapters explore the thermodynamic and electrochemical processes to better understand how electrolysis cells work, and how these can be combined to build large electrolysis modules. The book then goes on to discuss the electrolysis process and the characteristics, advantages, drawbacks, and challenges of the main existing electrolysis technologies. Current manufacturers and the main features of commercially available electrolyzers are extensively reviewed. The final chapters then present the possible configurations for integrating water electrolysis units with renewable energy sources in both autonomous and grid-connected systems, and comment on some relevant demonstration projects. Written by an internationally renowned team from academia and industry, the result is an invaluable review of the field and a discussion of known limitations and future perspectives.
Integrated Energy Systems For Multigeneration
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Author : Ibrahim Dincer
language : en
Publisher: Elsevier
Release Date : 2019-09-13
Integrated Energy Systems For Multigeneration written by Ibrahim Dincer and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-09-13 with Technology & Engineering categories.
Integrated Energy Systems for Multigeneration looks at how measures implemented to limit greenhouse gas emissions must consider smart utilization of available limited resources and employ renewable resources through integrated energy systems and the utilization of waste energy streams. This reference considers the main concepts of thermal and conventional energy systems through detailed systems description, analyses of methodologies, performance assessment and optimization, and illustrative examples and case studies. The book examines producing power and heat with cooling, freshwater, green fuels and other useful commodities designed to tackle rising greenhouse gas emissions in the atmosphere. With worldwide energy demand increasing, and the consequences of meeting supply with current dependency on fossil fuels, investigating and developing sustainable alternatives to the conventional energy systems is a growing concern for global stakeholders. Analyzes the links between clean energy technologies and achieving sustainable development Illustrates several examples of design and analysis of integrated energy systems Discusses performance assessment and optimization Uses illustrative examples and global case studies to explain methodologies and concepts
Development Of Alkaline Electrolyzer Electrodes And Their Characterization In Overall Water Splitting
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Author : Tao Jiang
language : en
Publisher:
Release Date : 2020
Development Of Alkaline Electrolyzer Electrodes And Their Characterization In Overall Water Splitting written by Tao Jiang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Splitting water into hydrogen and oxygen by electrolysis using electricity from intermittent ocean current, wind, or solar energies is one of the easiest and cleanest routes for high-purity hydrogen production and an effective way to store the excess electrical power without leaving any carbon footprints. The key dilemma for efficient large-scale production of hydrogen by splitting of water via the hydrogen and oxygen evolution reactions is the high overpotential required, especially for the oxygen evolution reaction. Hence, engineering highly active and stable earth-abundant oxygen evolution electrocatalysts with three-dimensional hierarchical porous architecture via facile, effective and commercial means is the main objective of the present PhD study. Finally, we developed two kinds of good performance oxygen evolution electrocatalysts through two different way combined with in situ electrochemical activation.For the first oxygen evolution electrocatalyst, we report a codoped nickel foam by nickel crystals, tricobalt tetroxide nanoparticles, graphene oxide nanosheets, and in situ generated nickel hydroxide and nickel oxyhydroxide nanoflakes via facile electrolytic codeposition in combination with in situ electrochemical activation as a promising electrocatalyst for oxygen evolution reaction. Notably, this hybrid catalyst shows good electrocatalytic performance, which is comparable to the state-of-the-art noble catalysts. The hybrid catalyst as an electrocatalytically-active and robust oxygen evolution electrocatalyst also exhibits strong long-term electrochemical durability. Such a remarkable performance can be benefiting from the introduced active materials deposited on nickel foam, in situ generated nickel oxyhydroxide nanoflakes and their synergistic effects. It could potentially be implemented in large-scale water electrolysis systems.For the second oxygen evolution electrocatalyst, a facile and efficient means of combining high-velocity oxy-fuel spraying followed by chemical activation, and in situ electrochemical activation based on oxygen evolution reaction has been developed to obtain a promising self-supported oxygen evolution electrocatalyst with lattice-distorted Jamborite nanosheets in situ generated on the three-dimensional hierarchical porous framework. The catalyst developed in this work exhibits not only exceptionally low overpotential and Tafel slope, but also remarkable stability. Such a remarkable feature of this catalyst lies in the synergistic effect of the high intrinsic activity arising from the lattice-dislocated Jamborite nanosheets as the highly active substance, and the accelerated electron/ion transport associated with the hierarchical porous architecture. Notably, this novel methodology has the potential to produce large-size-electrode for alkaline water electrolyzer, which can provide new dimensions in design of highly active and stable self-supported electrocatalysts.Furthermore, we have also initially developed good hydrogen evolution electrocatalysts upon in situ electrochemical activation, coupled with the obtained superior oxygen evolution electrocatalysts forming two-electrode configurations, respectively, both of which rivalled the integrated state-of-the-art ruthenium dioxide-platinum electrode in alkaline overall water splitting.In summary, a methodology of fabricating easy-to-commercial, high performance catalytic electrodes by combining general coating processes with in situ electrochemical activation has been realized and well developed. The in situ electrochemical activation mentioned above is a dynamic self-optimization behavior which is facile, flexible, effective and eco-friendly, as a strategy of fabricating self-supported electrodes for efficient and durable overall water splitting. We hope our work can promote advanced development toward large-scale hydrogen production using excess electrical power whenever and wherever available.