Using high-brilliance X-rays, researchers track the process that fuel cells use to produce electricity, knowledge that will help make large-scale alternative energy power systems more practical and reliable.
Chemists have made a decisive step towards more cost-efficient regenerative fuel cells and rechargeable metal-air batteries. They developed a new type of catalyst on the basis of carbon, which can facilitate two opposite reactions: electrolysis of water and combustion of hydrogen with oxygen.
This is the first demonstration, combining experiment and theory, that the interaction of the carbon atoms with a metal substrate stabilizes the low coordinated carbon edge atoms. In models for the growth of graphene on metal substrates, such low coordinated atoms at the growing edge play a special role. These results, which demonstrate such stability, will play a significant role in further development of these models and will help guide future strategies to grow graphene nanostructures with atomic scale control of edge structure.
With a chemical 'trick', scientists have succeeded in isolating a stable gold carbene complex. They are the first to have created the basis for directly examining the otherwise unstable gold-carbon double bond.
Nano for Security and Defense International Conference (NanoSD2014) will be held in Avila, Spain (September 23-26, 2014). The conference will provide an opportunity to discuss general issues and important impacts of nanotechnology in the development of security and defense.
The lithium-ion batteries that power our laptops and electric vehicles could store more energy and run longer on a single charge with the help of a sponge-like silicon material. Researchers developed the porous material to replace the graphite traditionally used in one of the battery's electrodes, as silicon has more than 10 times the energy storage capacity of graphite.
Flatlands Beyond Graphene (FBG) 2014 will bring together world-leading experts in the area of 2D nanomaterials. It will focus on recent advances in controlling and characterising the properties of these materials, with a particular emphasis on electronic, photonic and spintronic applications.
Researchers have designed a miniscule cooling element that uses spin waves to transport heat in electrical insulators. The cooling element could be used to dissipate heat in the increasingly smaller electrical components of computer chips.
Nanoelectronics research center imec, reported today an n-type PERT crystalline silicon solar cell fabricated on a large area wafer reaching a top conversion efficiency of 21.5 percent. This is the highest efficiency achieved for this type of solar cell on an industrial large area wafer size.
Under extremely high pressure conditions oxygen molecules group into quartets and give rise to a 'dance of their magnetic moments'. This results in magnetic properties never previously observed in these conditions and in theory points to the existence of a new phase of the element, called epsilon 1.