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E. Danko - One of the best experts on this subject based on the ideXlab platform.
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Hydrogen Technology Research at SRNL
2011Co-Authors: E. DankoAbstract:The Savannah River National Laboratory (SRNL) is a U.S. Department of Energy research and development laboratory located at the Savannah River Site (SRS) near Aiken, South Carolina. SRNL has over 50 years of experience in developing and applying Hydrogen Technology, both through its national defense activities as well as through its recent activities with the DOE Hydrogen Programs. The Hydrogen technical staff at SRNL comprises over 90 scientists, engineers and technologists. SRNL has ongoing R&D initiatives in a variety of Hydrogen storage areas, including metal hydrides, complex hydrides, chemical hydrides and carbon nanotubes. SRNL has over 25 years of experience in metal hydrides and solid-state Hydrogen storage research, development and demonstration. As part of its defense mission at SRS, SRNL developed, designed, demonstrated and provides ongoing technical support for the largest Hydrogen processing facility in the world based on the integrated use of metal hydrides for Hydrogen storage, separation, and compression. The SRNL has been active in teaming with academic and industrial partners to advance Hydrogen Technology. A primary focus of SRNL's R&D has been Hydrogen storage using metal and complex hydrides. SRNL and its Hydrogen Technology Research Laboratory have been very successful in leveraging their defense infrastructure, capabilities and investments to help solve this country's energy problems. SRNL has participated in projects to convert public transit and utility vehicles for operation using Hydrogen fuel. Two major projects include the H2Fuel Bus and an Industrial Fuel Cell Vehicle (IFCV) also known as the GATOR{trademark}. Both of these projects were funded by DOE and cost shared by industry. These are discussed further in Section 3.0, Demonstration Projects. In addition to metal hydrides Technology, the SRNL Hydrogen group has done extensive R&D in other Hydrogen technologies, including membrane filters for H2 separation, doped carbon nanotubes, storage vessel design and optimization, chemical hydrides, Hydrogen compressors and Hydrogen production using nuclear energy. Several of these are discussed further in Section 2, SRNL Hydrogen Research and Development.
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Hydrogen Technology RESEARCH AT THE SAVANNAH RIVER NATIONAL LABORATORY
2009Co-Authors: E. DankoAbstract:The Savannah River National Laboratory (SRNL) is a U.S. Department of Energy research and development laboratory located at the Savannah River Site (SRS) near Aiken, South Carolina. SRNL has over 50 years of experience in developing and applying Hydrogen Technology, both through its national defense activities as well as through its recent activities with the DOE Hydrogen Programs. The Hydrogen technical staff at SRNL comprises over 90 scientists, engineers and technologists, and it is believed to be the largest such staff in the U.S. SRNL has ongoing R&D initiatives in a variety of Hydrogen storage areas, including metal hydrides, complex hydrides, chemical hydrides and carbon nanotubes. SRNL has over 25 years of experience in metal hydrides and solid-state Hydrogen storage research, development and demonstration. As part of its defense mission at SRS, SRNL developed, designed, demonstrated and provides ongoing technical support for the largest Hydrogen processing facility in the world based on the integrated use of metal hydrides for Hydrogen storage, separation, and compression. The SRNL has been active in teaming with academic and industrial partners to advance Hydrogen Technology. A primary focus of SRNL's R&D has been Hydrogen storage using metal and complex hydrides. SRNL and its Hydrogen Technology Research Laboratory have been very successful in leveraging their defense infrastructure, capabilities and investments to help solve this country's energy problems. SRNL has participated in projects to convert public transit and utility vehicles for operation using Hydrogen fuel. Two major projects include the H2Fuel Bus and an Industrial Fuel Cell Vehicle (IFCV) also known as the GATOR{trademark}. Both of these projects were funded by DOE and cost shared by industry. These are discussed further in Section 3.0, Demonstration Projects. In addition to metal hydrides Technology, the SRNL Hydrogen group has done extensive R&D in other Hydrogen technologies, including membrane filters for H2 separation, doped carbon nanotubes, storage vessel design and optimization, chemical hydrides, Hydrogen compressors and Hydrogen production using nuclear energy. Several of these are discussed further in Section 2, SRNL Hydrogen Research and Development.
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SAVANNAH RIVER NATIONAL LABORATORY Hydrogen Technology RESEARCH
2008Co-Authors: E. DankoAbstract:The Savannah River National Laboratory (SRNL) is a U.S. Department of Energy research and development laboratory located at the Savannah River Site (SRS) near Aiken, South Carolina. SRNL has over 50 years of experience in developing and applying Hydrogen Technology, both through its national defense activities as well as through its recent activities with the DOE Hydrogen Programs. The Hydrogen technical staff at SRNL comprises over 90 scientists, engineers and technologists, and it is believed to be the largest such staff in the U.S. SRNL has ongoing R&D initiatives in a variety of Hydrogen storage areas, including metal hydrides, complex hydrides, chemical hydrides and carbon nanotubes. SRNL has over 25 years of experience in metal hydrides and solid-state Hydrogen storage research, development and demonstration. As part of its defense mission at SRS, SRNL developed, designed, demonstrated and provides ongoing technical support for the largest Hydrogen processing facility in the world based on the integrated use of metal hydrides for Hydrogen storage, separation, and compression. The SRNL has been active in teaming with academic and industrial partners to advance Hydrogen Technology. A primary focus of SRNL's R&D has been Hydrogen storage using metal and complex hydrides. SRNL and its Hydrogen Technology Research Laboratory have been very successful in leveraging their defense infrastructure, capabilities and investments to help solve this country's energy problems. SRNL has participated in projects to convert public transit and utility vehicles for operation using Hydrogen fuel. Two major projects include the H2Fuel Bus and an Industrial Fuel Cell Vehicle (IFCV) also known as the GATOR{trademark}. Both of these projects were funded by DOE and cost shared by industry. These are discussed further in Section 3.0, Demonstration Projects. In addition to metal hydrides Technology, the SRNL Hydrogen group has done extensive R&D in other Hydrogen technologies, including membrane filters for H2 separation, doped carbon nanotubes, storage vessel design and optimization, chemical hydrides, Hydrogen compressors and Hydrogen production using nuclear energy. Several of these are discussed further in Section 2, SRNL Hydrogen Research and Development.
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Hydrogen Technology RESEARCH AT THE SAVANNAH RIVER NATIONAL LABORATORY, CENTER FOR Hydrogen RESEARCH, AND THE Hydrogen Technology RESEARCH LABORATORY
2007Co-Authors: E. DankoAbstract:The Savannah River National Laboratory (SRNL) is a U.S. Department of Energy research and development laboratory located at the Savannah River Site (SRS) near Aiken, South Carolina. SRNL has over 50 years of experience in developing and applying Hydrogen Technology, both through its national defense activities as well as through its recent activities with the DOE Hydrogen Programs. The Hydrogen technical staff at SRNL comprises over 90 scientists, engineers and technologists, and it is believed to be the largest such staff in the U.S. SRNL has ongoing R&D initiatives in a variety of Hydrogen storage areas, including metal hydrides, complex hydrides, chemical hydrides and carbon nanotubes. SRNL has over 25 years of experience in metal hydrides and solid-state Hydrogen storage research, development and demonstration. As part of its defense mission at SRS, SRNL developed, designed, demonstrated and provides ongoing technical support for the largest Hydrogen processing facility in the world based on the integrated use of metal hydrides for Hydrogen storage, separation and compression. The SRNL has been active in teaming with academic and industrial partners to advance Hydrogen Technology. A primary focus of SRNL's R&D has been Hydrogen storage using metal and complex hydrides. SRNL and its Hydrogen Technology Laboratory have been very successful in leveraging their defense infrastructure, capabilities and investments to help solve this country's energy problems. Many of SRNL's programs support dual-use applications. SRNL has participated in projects to convert public transit and utility vehicles for operation on Hydrogen fuel. Two major projects include the H2Fuel Bus and an Industrial Fuel Cell Vehicle (IFCV) also known as the GATOR{trademark}. Both of these projects were funded by DOE and cost shared by industry. These are discussed further in Section 3.0, Demonstration Projects. In addition to metal hydrides Technology, the SRNL Hydrogen group has done extensive R&D in other Hydrogen technologies, including membrane filters for H2 separation, doped carbon nanotubes, storage vessel design and optimization, chemical hydrides, Hydrogen compressors and Hydrogen production using nuclear energy. Several of these are discussed further in Section 2, SRNL Hydrogen Research and Development.
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Hydrogen Technology Development and Demonstration at the Savannah River Technology Center
2004Co-Authors: E. DankoAbstract:The Savannah River Technical Center (SRTC) has been active in teaming with academic and industrial partners to advance Hydrogen Technology. A primary focus of SRTC's R and D has been Hydrogen storage using metal and complex hydrides. SRTC and its Hydrogen Technology Laboratory (HyTech) have been very successful in leveraging their defense infrastructure, capabilities and investments to help solve this country's energy problems. Many of HyTech's programs support dual-use applications. HyTech has participated in projects to convert public transit and utility vehicles for operation on Hydrogen fuel. Two major projects include the H2Fuel Bus and an Industrial Fuel Cell Vehicle (IFCV) also known as the GATORTM. Both of these projects were funded by DOE and cost shared by industry.
Rapee Utke - One of the best experts on this subject based on the ideXlab platform.
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Structural and kinetic investigation of the hydride composite Ca(BH4)2 + MgH2 system doped with NbF5 for solid-state Hydrogen storage
Physical Chemistry Chemical Physics, 2015Co-Authors: Fahim Karimi, Antonio Santoru, Julián Puszkiel, Claudio Pistidda, Chiara Milanese, Thomas Emmler, Mark Paskevicius, Ulla Vainio, P. Klaus Pranzas, Rapee UtkeAbstract:Designing safe, compact and high capacity Hydrogen storage systems is the key step towards introducing a pollutant free Hydrogen Technology into a broad field of applications. Due to the chemical bonds of Hydrogen–metal atoms, metal hydrides provide high energy density in safe Hydrogen storage media. Reactive hydride composites (RHCs) are a promising class of high capacity solid state Hydrogen storage systems. Ca(BH4)2 + MgH2 with a Hydrogen content of 8.4 wt% is one of the most promising members of the RHCs. However, its relatively high desorption temperature of ∼350 °C is a major drawback to meeting the requirements for practical application. In this work, by using NbF5 as an additive, the deHydrogenation temperature of this RHC was significantly decreased. To elucidate the role of NbF5 in enhancing the desorption properties of the Ca(BH4)2 + MgH2 (Ca-RHC), a comprehensive investigation was carried out via manometric measurements, mass spectrometry, Differential Scanning Calorimetry (DSC), in situ Synchrotron Radiation-Powder X-ray Diffraction (SR-PXD), X-ray Absorption Spectroscopy (XAS), Anomalous Small-Angle X-ray Scattering (ASAXS), Scanning and Transmission Electron Microscopy (SEM, TEM) and Nuclear Magnetic Resonance (NMR) techniques.
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structural and kinetic investigation of the hydride composite ca bh4 2 mgh2 system doped with nbf5 for solid state Hydrogen storage
Physical Chemistry Chemical Physics, 2015Co-Authors: Fahim Karimi, Antonio Santoru, Julián Puszkiel, Klaus P Pranzas, Claudio Pistidda, Chiara Milanese, Thomas Emmler, Mark Paskevicius, Ulla Vainio, Rapee UtkeAbstract:Designing safe, compact and high capacity Hydrogen storage systems is the key step towards introducing a pollutant free Hydrogen Technology into a broad field of applications. Due to the chemical bonds of Hydrogen–metal atoms, metal hydrides provide high energy density in safe Hydrogen storage media. Reactive hydride composites (RHCs) are a promising class of high capacity solid state Hydrogen storage systems. Ca(BH4)2 + MgH2 with a Hydrogen content of 8.4 wt% is one of the most promising members of the RHCs. However, its relatively high desorption temperature of ∼350 °C is a major drawback to meeting the requirements for practical application. In this work, by using NbF5 as an additive, the deHydrogenation temperature of this RHC was significantly decreased. To elucidate the role of NbF5 in enhancing the desorption properties of the Ca(BH4)2 + MgH2 (Ca-RHC), a comprehensive investigation was carried out via manometric measurements, mass spectrometry, Differential Scanning Calorimetry (DSC), in situ Synchrotron Radiation-Powder X-ray Diffraction (SR-PXD), X-ray Absorption Spectroscopy (XAS), Anomalous Small-Angle X-ray Scattering (ASAXS), Scanning and Transmission Electron Microscopy (SEM, TEM) and Nuclear Magnetic Resonance (NMR) techniques.
Jean-pierre Chabriat - One of the best experts on this subject based on the ideXlab platform.
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Dimensionless approach of a polymer electrolyte membrane water electrolysis: Advanced analytical modelling
Journal of Power Sources, 2021Co-Authors: Farid Aubras, Maha Rhandi, Jonathan Deseure, Amangoua Jean-jacques Kadjo, Miloud Bessafi, Jude Majasan, Brigitte Grondin-perez, Florence Druart, Jean-pierre ChabriatAbstract:The water electrolysis appears as a sustainable solution for Hydrogen production. The proton exchange membrane electrolyzers (PEM-E) play an increasingly important role in the development of Hydrogen Technology. Fast analysis of PEM-E efficiency using a mathematical approach is an effective tool for the improvement of these devices. This work presents a closed-form solution of single cell PEM-E modelling. The approach considers charge and mass transport balances. The one-dimensional study focuses on the anodic and the cathodic catalyst layer and the membrane using only dimensionless parameters. The analytical model allows to describe the water management as a function of pressure gradient and current density using a dimensionless ratio of water transport process (ßm). This model is endorsed by experimental data. Dimensionless parameters like Thiele modulus (ßa,c) or Wagner number (Wa,C) are reached using numerical optimization methods. Changing values of dimensionless numbers, allow the observation of the impact of the two-phase flow regimes on the electrochemical performances.
L R Sheppard - One of the best experts on this subject based on the ideXlab platform.
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solar Hydrogen environmentally safe fuel for the future
International Journal of Hydrogen Energy, 2005Co-Authors: J Nowotny, C C Sorrell, L R SheppardAbstract:Abstract There is a growing awareness that Hydrogen is the fuel of the future. While Hydrogen can be generated using different technologies, only some of them are environmentally friendly. It is argued that Hydrogen generated from water using solar energy, solar-Hydrogen, is a leading candidate for a renewable and environmentally safe energy carrier due to the following reasons: • Solar-Hydrogen Technology is relatively simple and, therefore, the cost of such a fuel is expected to be substantially less than that of the present price of gasoline. • The only raw material for the production of solar-Hydrogen is water, which is a renewable resource. • Large areas of the globe have ready access to solar energy which is the only required energy source for solar-Hydrogen generation. The development of solar-Hydrogen Technology requires new photo-sensitive materials serving as photo-electrodes in electrochemical devices that convert solar energy into chemical energy (Hydrogen). As photo-electrodes are likely to be made of inexpensive polycrystalline materials rather than expensive single crystals, it is important to realize that the photo-sensitivity of polycrystalline materials is strongly influenced, if not determined, by the local properties of interfaces, such as external surfaces and grain boundaries. Consequently, the successful development of novel photo-sensitive materials will be determined by progress in the science and engineering of materials interfaces. There is also a need to increase the present state of understanding of the local properties of interfaces, such as defect disorder, electronic structure, and related semiconducting properties, on the impact of interfaces on photo-electrochemical properties. The present paper briefly outlines the main challenges in the development of materials for solar-Hydrogen.
Sebastian Weber - One of the best experts on this subject based on the ideXlab platform.
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cost reduced steel for Hydrogen Technology with high resistance to Hydrogen induced embrittlement
2014Co-Authors: Joerg Naumann, Thorsten Michler, Wolfgang Leistner, Werner Theisen, Sebastian Weber, Mauro Sebastian MartinAbstract:A corrosion-resistant, hot and cold formable and weldable steel for use in Hydrogen-induced Technology with high resistance to Hydrogen embrittlement has the following composition: 0.01 to 0.4 percent by mass of carbon, ≦3.0 percent by mass of silicon, 0.3 to 30 percent by mass of manganese, 10.5 to 30 percent by mass of chromium, 4 to 12.5 percent by mass of nickel, ≦1.0 percent by mass of molybdenum, ≦0.2 percent by mass of nitrogen, 0.5 to 8.0 percent by mass of aluminum, ≦4.0 percent by mass of copper, ≦0.1 percent by mass of boron, ≦1.0 percent by mass of tungsten, ≦5.0 percent by mass of cobalt, ≦0.5 percent by mass of tantalum, ≦2.0 percent by mass of at least one of the elements: niobium, titanium, vanadium, hafnium and zirconium, ≦0.3 percent by mass of at least one of the elements: yttrium, scandium, lanthanum, cerium and neodymium, the remainder being iron and smelting-related steel companion elements.
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lean alloyed austenitic stainless steel with high resistance against Hydrogen environment embrittlement
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2011Co-Authors: Mauro Martin, Sebastian Weber, Werner TheisenAbstract:Abstract To address the upcoming austenitic stainless steel market for automotive applications involving Hydrogen Technology, a novel lean – alloyed material was developed and characterized. It comprises lower contents of nickel and molybdenum compared to existing steels for high – pressure Hydrogen uses, for instance 1.4435 (AISI 316L). Alloying with manganese and carbon ensures a sufficient stability of the austenite at 8 wt.% of nickel while silicon is added to improve resistance against embrittlement by dissolved Hydrogen. Investigations were performed by tensile testing in air and 400 bar Hydrogen at 25 °C, respectively. In comparison to a standard 1.4307 (AISI 304L) material, a significant improvement of ductility was found. The materials concept is presented in general and discussed with regard to austenite stability and microstructure.
