|A comprehensive look at how tiny particles in a lithium ion battery electrode behave shows that rapid-charging the battery and using it to do high-power, rapidly draining work may not be as damaging as researchers had thought -- and that the benefits of slow draining and charging may have been overestimated.
The results challenge the prevailing view that 'supercharging' batteries is always harder on battery electrodes than charging at slower rates. ...> Full Article|
Salt crystals are often responsible when buildings start to show signs of aging. Researchers from the Institute for Building Materials have studied salt damage in greater depth and can now predict weathering processes more accurately.
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|Caltech materials scientists have developed a method for creating new structural materials by taking advantage of the unusual properties that solids can have at the nanometer scale. In a new Science paper, the Caltech researchers explain how they used the method to produce a ceramic (e.g., a piece of chalk or a brick) that contains about 99.9 percent air yet is incredibly strong and can recover its original shape after being smashed by more than 50 percent. ...> Full Article|
|Researchers have been trying to increase the efficiency of solid oxide fuel cells by lowering the temperatures at which they run. More efficient fuel cells might gain wider use in vehicles or as quiet, pollution-free, neighborhood electricity generating stations. A serendipitous finding has resulted in a semiconducting material that could enable fuel cells to operate at temperatures two-thirds lower than current technology, scientists reported Aug. 18 in Nature Communications. ...> Full Article|
|Using an overlying bath of ionic liquid, a piece of superconductor -- divided by an insulating strip -- supports narrow tunnels which permit currents to flow between. ...> Full Article|
|Industrial wet spinning processes produce fibers from polymers and other materials by using tiny needles to eject continuous jets of liquid precursors. The electrically charged liquids ejected from the needles normally exhibit a chaotic 'whipping' structure as they enter a secondary liquid that surrounds the microscopic jets. Researchers have now learned how to control that chaotic structure. ...> Full Article|
|Using an 'electric prism,' scientists have found a new way of separating water molecules that differ only in their nuclear spin states and, under normal conditions, do not part ways. Since water is such a fundamental molecule in the universe, the recent study may impact a multitude of research areas ranging from biology to astrophysics. The research team from the Center for Free-Electron Laser Science reported its results in the journal Angewandte Chemie International Edition. ...> Full Article|
In an unprecedented view inside a working lithium-ion battery, researchers used a neutron beam to 'see' lithium flow as the battery charged and discharged. The study could one day help explain why rechargeable batteries lose capacity over time, and sometimes even catch fire.
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|Chemists at ETH-Zuerich and ITbM, Nagoya University have developed a new method to build large libraries of bioactive molecules -- which can be used directly for biological assays -- by simply mixing a small number of building blocks in water. ...> Full Article|
|A multi-element high‐entropy alloy not only tests out as one of the toughest materials on record, but, unlike most materials, the toughness as well as the strength and ductility of this alloy actually improves at cryogenic temperatures. ...> Full Article|
|Research from North Carolina State University shows that a type of modified titania, or titanium dioxide, holds promise as an electrical insulator for superconducting magnets, allowing heat to dissipate while preserving the electrical paths along which current flows. ...> Full Article|
|Touchscreens and solar cells rely on special oxide layers. However, errors in the layers' atomic structure impair not only their transparency, but also their conductivity. Using atomic models, Fraunhofer researchers have found ways of identifying and removing these errors. ...> Full Article|
Polyester clothes smell worse than cotton, following intensive exercise by their wearers, because bacteria that cause odor grow better on polyester, according to research published ahead of print in the journal Applied and Environmental Microbiology.
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Lithium-ion batteries are seen as a solution for energy storage of the future and have become indispensable, especially in electromobility. However, when metallic lithium forms and deposits during charging it can lead to a reduced battery lifespan and even short-circuits. Scientists at the Technische Universitat München have now managed to peer into the inner workings of a battery without destroying it.
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|Researchers in Japan developed a porous polymer that stores and sorts organic molecules in the presence of water, which could have big implications for various industrial processes such as energy storage. ...> Full Article||