 |
|
Ethylene suggested for hydrogen storage
December 11, 2006Ethylene, a ho-hum material that is the building block of the most common plastic, might have an exciting future in storing hydrogen, the hoped-for transportation fuel of the future. New research reported by scientists from the National Institute of Standards and Technology (NIST) and Turkey's Bilkent University makes the surprising prediction that "ethylene, a well-known inexpensive molecule, can be an important basis in developing frameworks for efficient and safe hydrogen-storage media."
The team's calculations show that attaching titanium atoms at opposite ends of an ethylene molecule (four hydrogen atoms bound to a pair of carbon atoms) will result in a very attractive "two for" deal. The addition of the two metal atoms results in a net gain of up to 10 hydrogen molecules that can absorb onto the ethylene-titanium complex, for a total of 20 hydrogen atoms. As important, the engineered material is predicted to release the hydrogen with only a modest amount of heating.
The absorbed hydrogen molecules account for about 14 percent of the weight of the titanium-ethylene complex. That's about double the Department of Energy's minimum target of 6.5 percent for economically practical storage of hydrogen in a solid state material. Although significant challenges stand in the way, solid state storage is preferred to storing hydrogen as a liquid or compressed gas, both of which require large-volume tanks.
"The success of future hydrogen and fuel-cell technologies is critically dependent upon the discovery of new materials that can store large amounts of hydrogen at ambient conditions," explains Taner Yildirim, a theorist at the NIST Center for Neutron Research.
Yildirim and collaborators have been searching for routes to develop these needed materials. Their earlier research has pointed to several candidates, including carbon nanotubes coated with titanium atoms. Difficulties in securing bulk amounts of small-diameter nanotubes and other challenges have foiled efforts to create these materials in the laboratory.
The team anticipates that ethylene-based complexes, made with titanium or other so-called transition metals, will prove easier to synthesize and, then, to evaluate for their potential for high-capacity hydrogen storage.
National Institute of Standards and Technology (NIST)
"The success of future hydrogen and fuel-cell technologies is critically dependent upon the discovery of new materials that can store large amounts of hydrogen at ambient conditions," explains Taner Yildirim, a theorist at the NIST Center for Neutron Research.
Yildirim and collaborators have been searching for routes to develop these needed materials. Their earlier research has pointed to several candidates, including carbon nanotubes coated with titanium atoms. Difficulties in securing bulk amounts of small-diameter nanotubes and other challenges have foiled efforts to create these materials in the laboratory.
The team anticipates that ethylene-based complexes, made with titanium or other so-called transition metals, will prove easier to synthesize and, then, to evaluate for their potential for high-capacity hydrogen storage.
National Institute of Standards and Technology (NIST)
Science News and Science Current Events Tag Cloud
This tag cloud is a visual representation of term frequencies of random science news topics with common terms grouped together and emphasized by their display size.
Insecticide Radiation dose Amphibian Cell Growth Osteoporosis Enceladus Diarrhea Electrons Amphibians Biofuel Gamma-ray Immune Cell Thyroid Cancer Anemia Emissions Cocaine Addiction Bioenergy Gene Regulation Inflammatory Bowel Disease Mosquito Genome Sequencing Jellyfish Birth Weight Endangered Species Facial Expressions
See More: Science News Tags
Hydrogen Storage Current Events and Hydrogen Storage News RSSFeather fibers fluff up hydrogen storage capacity
Scientists in Delaware say they have developed a new hydrogen storage method - carbonized chicken feather fibers - that can hold vast amounts of hydrogen, a promising but difficult to corral fuel source, and do it at a far lower cost than other hydrogen storage systems under consideration.
A touch of potassium yields better hydrogen-storage materials
An international research team, including Professor Rajeev Ahuja's research group at Uppsala University, has shown that small additions of potassium drastically improve the hydrogen-storage properties of certain types of hydrogen compounds.
New storage system design brings hydrogen cars closer to reality
Researchers have developed a critical part of a hydrogen storage system for cars that makes it possible to fill up a vehicle's fuel tank within five minutes with enough hydrogen to drive 300 miles.
Researchers Create Catalysts for Use in Hydrogen Storage Materials
A team of scientists from Virginia Commonwealth University, the University of Uppsala in Sweden, and the Savannah River National Laboratory have identified that carbon nanostructures can be used as catalysts to store and release hydrogen, a finding that may point researchers toward developing the right material for hydrogen storage for use in cars.
Revealing new applications for carbon nanomaterials in hydrogen storage
An international research team, involving Professor Rajeev Ahuja at Uppsala University and researchers in the USA, set out to understand the mechanism behind the catalytic effects of carbon nanomaterials.
Hydrogen tank lighter than battery
Dutch-sponsored researcher Robin Gremaud has shown that an alloy of the metals magnesium, titanium and nickel is excellent at absorbing hydrogen.
Metal-organic frameworks feel the pressure of Argonne scientists
Scientists at U.S. Department of Energy's Argonne National laboratory are putting the pressure on metal-organic frameworks (MOF).
A promising step towards more effective hydrogen storage
An international research team led by Swedish Professor Rajeev Ahuja, Uppsala University, has demonstrated an atomistic mechanism of hydrogen release in magnesium nanoparticles - a potential hydrogen storage material. The findings have been published in the online edition of Proceedings of the National Academy of Science (PNAS).
Improved ion mobility is key to new hydrogen storage compound
A materials scientist at the National Institute of Standards and Technology (NIST) has deciphered the structure of a new class of materials that can store relatively large quantities of hydrogen within its crystal structure for later release.
Carbon nanotube measurements: latest in NIST 'how-to' series
The National Institute of Standards and Technology (NIST), in collaboration with the National Aeronautics and Space Administration (NASA), has published detailed guidelines for making essential measurements on samples of single-walled carbon nanotubes (SWCNTs). The new guide constitutes the current "best practices" for characterizing one of the most promising and heavily studied of the new generation of nanoscale materials.
More Hydrogen Storage Current Events and Hydrogen Storage News Articles
 |
Hydrogen Fuel: Production, Transport, and Storage by Ram B. Gupta (Editor) From Methane to Hydrogen—Making the Switch to a Cleaner Fuel Source The world’s overdependence on fossil fuels has created environmental problems, such as air pollution and global warming, as well as political and economic unrest. With water as its only by-product and its availability in all parts of the world, hydrogen promises to be the next great fuel source. All of the Key Aspects of Hydrogen Fuel Hydrogen Fuel: Production, Transport, and Storage describes various aspects of hydrogen fuel, including production from both renewable and nonrenewable sources, purification, storage, transport, safety, codes, and carbon dioxide sequestration. The book examines the unique properties and uses of the hydrogen molecule, its ability to be produced from numerous energy sources,... |
 |
Solid-State Hydrogen Storage: Materials and Chemistry (Woodhead Publishing in Materials) by G. Walker (Editor) The next several years will see an emergence of hydrogen fuel cells as an alternative energy option in both transportation and domestic use. A vital area of this technological breakthrough is hydrogen storage. The design and selection of the materials is critical to the correct and long-term functioning of fuel cells and must be tailored to the type of fuel cell. The book looks in detail at each type of fuel cell and the specific material requirements and challenges. The text covers storage technologies, hydrogen containment materials, hydrogen futures and storage system design. It analyzes porous storage materials, metal hydrides, and complex hydrides as well as chemical hydrides and hydrogen interactions. |
 |
Reservoir Tank 2 Quart Hydrogen Generator Systems And General Purpose 3/8' Barbed Fitting On Bottom Of Tank. Blow Molded With A Seamless Wall Construction Which Gives The User The High Quality And Low Maintenance Usage Necessary In Fluid Handling Applications. We also carry Custom 1 Qt. bubbler/scrubber tanks for your hydrogen generator system. Feel free to call with any questions 541-756-7050. |
 |
Danger Oxygen / Hydrogen Keychain by Design a Product LLC * Durable acrylic key chain is crystal-clear and double-sided so the artwork or message is seen twice. * Sturdy metal ring holds your keys securely. * Full color printed images or messages are included. * If you have new ideas or need help selecting text for your custom keychains please contact us. * Size: 2 1/8" x 3 1/2" (Approx. business card) |
 |
Nanomaterials for Solid State Hydrogen Storage (Fuel Cells and Hydrogen Energy) by Robert A. Varin (Author), Tomasz Czujko (Author), Zbigniew S. Wronski (Author) Over the past decade, important advances have been made in the development of nanostructured materials for solid state hydrogen storage used to supply hydrogen to fuel cells in a clean, inexpensive, safe and efficient manner. "Nanomaterials for Solid State Hydrogen Storage" focuses on hydrogen storage materials having high volumetric and gravimetric hydrogen capacities, and thus having the highest potential of being applied in the automotive sector. Written by leading experts in the field, "Nanomaterials for Solid State Hydrogen Storage" provides a thorough history of hydrides and nanomaterials, followed by a discussion of existing fabrication methods. The authors' own research results in the behavior of various hydrogen storage materials are also presented. Covering fundamentals,... |
 |
Light, Water, Hydrogen: The Solar Generation of Hydrogen by Water Photoelectrolysis by Craig A. Grimes (Author), Oomman K. Varghese (Author), Sudhir Ranjan (Author) The development of a direct, inexpensive, and efficient method for converting solar energy into a portable, clean fuel would allow elimination of the growing problems associated with the ever increasing use of fossil fuels and the reality of their rapid depletion. As the title suggests, Light, Water, Hydrogen: The Solar Generation of Hydrogen by Water Photoelectrolysis, considers the combination of water and light with a suitable semiconductor to achieve a safe, renewable and therefore inexhaustable means for hydrogen generation via the splitting of the water molecule, or photoelectrolysis. The authors consider the impact of recent advances in nanotechnology on the water photoelectrolysis field, providing specific examples as well as the theories and methods necessary for... |
 |
21st Century Complete Guide to Hydrogen Power and Fuel Cell Cars: FreedomCAR Plans, Automotive Technology for Hydrogen Fuel Cells, Hydrogen Production, Storage, Safety Standards, Energy Depart by World Spaceflight News (Author) This comprehensive set of two CD-ROMs provides a thorough collection of documents covering research into using hydrogen as a fuel and developing automobiles powered by hydrogen fuel cells. There is extensive material from the Department of Energy, the Department of Defense, and NASA. Hydrogen and fuel cells have the potential to solve several major challenges facing America today: dependence on petroleum imports, poor air quality, and greenhouse gas emissions. The Hydrogen, Fuel Cells & Infrastructure Technologies Program at the U.S. Department of Energy is working with partners to accelerate the development and successful market introduction of these technologies. Hydrogen is a clean and sustainable form of energy that can be used in mobile and stationary applications. Fuel cells... |
|
MATERIALS AND TECHNOLOGY FOR HYDROGEN STORAGE AND GENERATION (Materials Research Society Symposium, Volume 884) by multiple authors (Author) | |
 |
Electrochemical Hydrogen Storage in Lightweight Electrode Materials: Investigation of magnesium and carbon-based compounds by Rogier Niessen (Author) Energy storage has nowadays become an important issue due to the fact that equipment is being scaled down while energy consumption is generally not reduced. This has also resulted in ever increasing environmental issues. A possible answer might be found in using clean fuels such as hydrogen. Currently, US Department of Energy (DoE) targets for the year 2010 aim at 6 wt.% of hydrogen stored on system level. Presently, energy densities achieved by commercial Metal-Hydrides reach only 1.2 wt.%. Furtherdevelopment of new lightweight hydrogen storage materials, based on magnesium or carbon, can provide a possible route to highergravimetrical storage capacities. The research described in this work shows that magnesium-based alloys show excellent reversible and fast hydrogen storage properties... |
|
Hydrogen Storage Materials (Materials Science Forum,) by R. G. Barnes (Editor) Coverage includes: hydrides; metal hydride systems; intermetallic hydrides; and chemical heat pumps. |
| © 2009 BrightSurf.com |