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26 Current news of SLACrss
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The work sheds light on the web of hydrogen bonds that gives water its strange properties, which play a vital role in many chemical and biological processes
Wateris the most abundant yet least understood liquid in nature. It exhibits many strange behaviors that scientists still struggle to explain. While most liquids get denser as they get colder, water is most dense at 39 degrees Fahrenheit, just above its freezing point. This is why ice floats to ...
Measuring the process in unprecedented detail gives them clues to how to minimize the problem and protect battery performance
When lithium ions flow in and out of a battery electrode during charging and discharging, a tiny bit of oxygen seeps out and the battery's voltage - a measure of how much energy it delivers - fades an equally tiny bit. The losses mount over time, and can eventually sap the battery's energy ...
Scientists have documented a process that makes these next-gen batteries lose charge - and eventually some of their capacity for storing energy - even when a device is turned off
The same process that drains the battery of your cell phone even when it's turned off is even more of a problem for lithium-metal batteries, which are being developed for the next generation of smaller, lighter electronic devices, far-ranging electric vehicles and other uses. Now scientists at ...
They discovered that the messy environment of a chemical reaction can actually change the shape of a catalytic nanoparticle in a way that makes it more active
Replacing the expensive metals that break down exhaust gases in catalytic converters with cheaper, more effective materials is a top priority for scientists, for both economic and environmental reasons. Catalysts are required to perform chemical reactions that would otherwise not happen, such as ...
These inexpensive photosensitizers could make solar power and chemical manufacturing more efficient
Photosensitizers are molecules that absorb sunlight and pass that energy along to generate electricity or drive chemical reactions. They're generally based on rare, expensive metals; so the discovery that iron carbenes, with plain old iron at their cores, can do this, too, triggered a wave of ...
Combination of research methods reveals causes of capacity fading, giving better insight to design advanced batteries for electric vehicles
A team of scientists including researchers at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory and SLAC National Accelerator Laboratory have identified the causes of degradation in a cathode material for lithium-ion batteries, as well as possible remedies. Their findings, ...
Imaging nanoscale dynamics with unparalleled detail and speed
Using a super X-ray microscope, an international research team has “filmed” the explosion of single nanoparticles. The team led by Tais Gorkhover from Technische Universität Berlin, currently working at the SLAC National Accelerator Laboratory in the U.S. as a fellow of the Volkswagen Foundation, ...
Research led by scientists from the Department of Energy's SLAC National Accelerator Laboratory and Stanford University shows how individual atoms move in trillionths of a second to form wrinkles on a three-atom-thick material. Revealed by a brand new "electron camera," one of the world's ...
(DOE/SLAC National Accelerator Laboratory) A study led by researchers from the US Department of Energy's SLAC National Accelerator Laboratory and the University of California, Los Angeles has d
A study led by researchers from the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory and the University of California, Los Angeles has demonstrated a new, efficient way to accelerate positrons, the antimatter opposites of electrons. The method may help boost the energy and ...
There are no magic bullets for global energy needs. But fuel cells in which electrical energy is harnessed directly from live, self-sustaining chemical reactions promise cheaper alternatives to fossil fuels. To facilitate faster energy conversion in these cells, scientists disperse nanoparticles ...