Palo Alto, CA — Scientists at Stanford University have figured out how to wirelessly transmit electricity between moving objects, overcoming previous limitations and possibly bringing Nikola Tesla’s vision of a global wireless power grid closer to reality.
Using technology originally developed in 2007 at MIT to wirelessly transmit electricity between stationary objects, the research team was able to achieve a power transfer between moving objects based on magnetic resonance coupling. When electricity moves through wires, it creates an oscillating magnetic field, which in turn causes electrons in wire coils nearby to oscillate, thus transferring energy. However, if the oscillating coils are not tuned automatically and continuously as the object moves, the flow of electricity is stopped.
(TechXplore)—Most of the sodium-ion batteries that have been developed so far have been half-cell batteries, meaning that the anode is made of a standard sodium metal. However, this standard sodium metal becomes highly active when exposed to oxygen or moisture, creating a safety hazard. For this reason, researchers have been exploring sodium-ion batteries in a full cell format, in which the anode is made of an alternative material.
In a new study, researchers have designed and fabricated a sodium-ion full-cell battery that uses sodium titanium oxide nanotubes as the anode material. In addition to greatly reducing the safety risks compared to sodium-ion half-cell batteries, the new battery can store nearly the same amount of energy in a given volume as today’s state-of-the-art lithium-ion batteries. Although the new battery’s energy density (220 Wh/kg by itself, or an estimated 130 Wh/kg when fully assembled) is not as high as that of the best sodium-ion half-cells, it is the highest achieved so far for sodium-ion full-cell batteries. A high energy density ultimately translates to longer battery lifetimes and—when used in electric vehicles—longer driving ranges.
The researchers, led by Guihua Yu at The University of Texas at Austin, have published a paper on the new high-energy sodium-ion full-cell battery in a recent issue of Energy & Environmental Science.
H/t reader kevin a:
“Will be interesting, Lithium will be worth nothing..”
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Written by PSI staff
The sun defines the climate, not carbon dioxide. So says eminent Russian space scientist, Habibullo Abdussamatov (Dr. Sc. – Head of Space research laboratory of the Pulkovo Observatory). Also Head of the Russian/Ukrainian joint project Astrometria, Abdussamatov (pictured) is featured on page 140 of the 2009 U.S. Senate Report of More Than 700 Dissenting Scientists Over Man-Made Global Warming.
Below Dr Abdussamatov explains why carbon dioxide is “insignificant” in climate change (translated from Russian by Lucy Hancock).
Citing an ancient prophecy, a prominent rabbi claims a forthcoming ‘red nova’ is evidence of the ‘the Messianic process’
The collision of two distant stars in 2022 is set to create an astronomical spectacle that could be viewed from planet Earth with the naked eye.
A global warming research study in Canada has been cancelled because of “unprecedented” thick summer ice.
Naturally, the scientist in charge has blamed it on ‘climate change.’
According to Vice:
The study, entitled BaySys, is a $17-million four-year-long program headed by the University of Manitoba. It was planning to conduct the third leg of its research by sending 40 scientists from five Canadian universities out into the Bay on the Canadian Research Icebreaker CCGS Amundsen to study “contributions of climate change and regulation on the Hudson Bay system.”
But it had to be cancelled because the scientists’ icebreaker was required by the Canadian Coast Guard for a rather more urgent purpose – rescuing fishing boats and supply ships which had got stuck in the “unprecedented ice conditions”.
June 13, 2017
The news story made a big splash: in January 2016 ETH researchers Professor Raffaele Mezzenga and his senior researcher Sreenath Bolisetty published a study in the journal Nature Nanotechnology about an innovative type of membrane developed in their laboratory.
They showed that this membrane could effectively filter out heavy metals, radioactive waste, other toxic substances, and bacteria from polluted water. The filter can also trap ions of gold, platinum and palladium, allowing the recovery of precious metals. What’s more, the composition of the membrane is extremely simple: a mixture of denatured whey proteins and activated charcoal applied to a filter paper as a substrate.
A recent clinical trial has shown that one vegetable extract may have astounding positive effects on those with autism – broccoli extract.
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A team including several Carnegie scientists has developed a form of ultrastrong, lightweight carbon that is also elastic and electrically conductive. A material with such a unique combination of properties could serve a wide variety of applications from aerospace engineering to military armor.
Carbon is an element of seemingly infinite possibilities. This is because the configuration of its electrons allows for numerous self-bonding combinations that give rise to a range of materials with varying properties. For example, transparent, superhard diamonds, and opaque graphite, which is used for both pencils and industrial lubricant, are comprised solely of carbon.