Using metal ions with three or more positive charges, researchers in Tian's laboratory bonded graphene - oxide flakes into a transparent membrane.
Other scientists have
used metal ions to make hydrogel actuators, but no one has used chemistry found in mussel adhesive proteins.
Not exact matches
The announcement came just a week after Samsung SDI, South Korea's leading battery maker, unveiled plans to recycle cobalt from
used mobile phones and develop lithium -
ion batteries with minimum content of the
metal, or no cobalt at all, as a way to offset soaring prices for the silver - grey commodity.
So he made
use of helical molecules available in the laboratory to study the reversible uncoiling / coiling motions associated with the binding and release of
metal ions, eventually orchestrating transitions of helical molecules into linear complexes and back again.
«The prospect of
using metal - organic frameworks for sustainable water filtration is incredibly exciting from a public - good perspective, while delivering a better way of extracting lithium
ions to meet global demand could create new industries,» said Anita Hill, CSIRO's chief scientist.
Inspired by his own bout of leukemia to try to find a better cancer treatment, retired broadcasting station owner Kanzius guessed that as an alternative to chemotherapy, he could inject tumors with
metal ions, then
use radio waves to heat the
metal and destroy cancerous cells.
The team's technique
uses a
metal - organic - framework membrane that mimics the filtering function, or «
ion selectivity,» of biological cell membranes.
The idea is to
use lithium
ions to chemically break the
metal oxide catalyst into smaller and smaller pieces.
Using abundant inexpensive material means less need for such expensive
metals as cobalt, currently
used in lithium
ion batteries» cathodes, lowering overall cost.»
To stay in that exact spot, the craft will
use a field emission electric propulsion engine, which ejects
ions of liquid
metal cesium to exert a miniscule thrust to counter tiny forces on the craft, such as the sunlight itself.
Transmetalation normally involves a reaction done in organic chemistry in which the substitution of
metal ions generates new
metal - carbon bonds for
use in catalytic systems and to synthesize new
metal complexes.
Lithium -
ion batteries — similar to what powers your laptop or cell phone — satisfy both requirements, making them a big step up from the nickel -
metal hydride cells
used in gas - electric hybrids like the Toyota Prius.
Although future ADS systems will
use protons beams and a heavy
metal target to produce neutrons, Guinevere's neutron source — deuterium
ions hitting a tritium target — is powerful enough to simulate how a bigger machine like Myrrha will behave, says Abderrahim.
Researchers now
use X-ray fluorescence spectrometry to measure air pollution
metal content,
ion chromatography to identify other chemicals and other tactics to assess organic and elemental carbon levels.
Now, an international team of researchers led by Bingqing Wei, a professor of mechanical engineering at the University of Delaware and the director of the Center for Fuel Cells and Batteries, is doing work that could lay the foundation for more widespread
use of lithium
metal batteries that would have more capacity than the lithium
ion batteries commonly
used in consumer electronics today.
The specific bacterium
used in Bren's project was Shewanella oneidensis MR - 1, which consumes toxic heavy
metal ions in the wastewater and ejects electrons.
My expertise is in microanalysis of involatile materials, both «hard» (minerals, semiconductors,
metals) and «soft» (biomaterials)
using secondary
ion mass spectrometry (SIMS).
Bar - Shir A, Gilad AA, Chan KW, Liu G, van Zijl PC, Bulte JW, McMahon MT. «
Metal ion sensing
using ion chemical exchange saturation transfer (19) f magnetic resonance imaging.»
Rather than the expected virulence factor, the newly discovered E. coli - specific genes helped protect the bacteria from the toxic effect of
metal ions the body
uses to fight infection.
In order to ensure that your health is not compromised, an integrated approach which includes nutritional counseling, special air filters, a special oxygenated water system, negative
ion generators, oxygen masks and rubber dams is
used for mercury removal and other toxic
metals.
PF - 2 reduction elements are designed for
use in conjunction with Black Berkey water purification elements to adsorb the following unwanted elements found in drinking water - Fluoride, Arsenic V and pre oxidized Arsenic III, Other residual heavy
metal ions.
EDTA (ethylene diamine tetra acetic acid)[113] is a poly amine carboxylic acid, originally developed for industrial
uses to keep
metal ions such as calcium or magnesium from interfering with chemical processes.
The Berkey Fluoride and Arsenic Removal Water Filter is designed for
use in conjunction with the Black Berkey water filters to adsorb Fluoride, Arsenic and Other residual heavy
metal ions.
Most likely Toyota is preparing to unveil a plug - in hybrid version of the Prius, after already revealing the Prius Eco and its upgraded lithium -
ion battery (the standard Prius
uses a nickel -
metal hydride unit).
The newest Prius
uses smaller, lighter hybrid components, including a lithium -
ion hybrid battery in addition to the existing nickel -
metal hydride.
The Prius PHV
uses a more sophisticated 288 - cell lithium -
ion battery, as opposed to the nickel -
metal hydride battery back in the regular Prius.
Naturally, the system
uses stop / start technology and regenerative braking, and also adopts a lithium -
ion battery pack — still relatively rare among hybrids which more often
use nickel -
metal hydride chemistry, and first pioneered on the 2010 S400HV.
The C - MAX Hybrid's advanced lithium -
ion battery is 25 to 30 % smaller and 50 % lighter than nickel -
metal - hydride (NiMH) batteries
used in first - generation hybrid vehicles.
Hyundai Motor decided to
use a lithium -
ion polymer battery pack for all IONIQ models instead of conventional nickel -
metal - hydride batteries.
The li -
ion tech is more advanced than the nickel -
metal hydride packs
used in previous Fords and current Toyota non-plug-in hybrids.
Like the Prius, it
uses either a 4.0 amp - hour, 259 - volt lithium -
ion or 6.5 Ah 245 - volt nickel -
metal hydride battery pack, depending on trim.
In LE trim, the Camry Hybrid has a lithium -
ion battery pack and an mpg rating of 51 city / 53 highway; the SE and XLE trims
use a nickel -
metal - hydride battery and have a rating of 44 city / 47 highway.
The C - Max Hybrid features an advanced lithium -
ion battery that is 25 to 30 per cent smaller and 50 per cent lighter than nickel -
metal - hydride (NiMH) batteries
used in first - generation hybrid vehicles.
He declined to comment on the chances of Toyota's
using lithium
ion batteries, which offer greater energy storage than the Prius» current nickel -
metal hydride batteries.
As we already know, the Toyota Prius V Hybrid
uses either lithium
ion technology or nickel -
metal hydride for the batteries and therefore estimate production figures can come from the available supply.
Using a 1.5 - liter four - cylinder gasoline engine, and an electric motor in a hybrid system tuned to produce 99 system net hp, Prius c
uses older technology sealed Nickel -
Metal Hydride (Ni - MH) batteries (as opposed to the Lithium -
Ion packs that are more common in newer systems).
The C - Max Energi was designed with total 188 hp (140 kW) in hybrid mode delivered by a 2.0 - liter Atkinson cycle four - cylinder gasoline engine plus an electric motor powered by a 7.6 kWh lithium -
ion battery pack, which is smaller and lighter than nickel
metal hydride batteries
used in previous Ford generation hybrids.
Unlike earlier hybrid systems that relied on nickel -
metal - hydride batteries, the new system
uses lithium -
ion batteries that are lighter and more efficient.
Camry Hybrid LE models actually
use a pricier lithium -
ion pack, while the higher - trim Camry Hybrid SE and XLE variants
use a nickel -
metal hydride battery.
Lithium -
ion batteries are both lighter and smaller than nickel -
metal hydride batteries, which are
used in almost all hybrid cars today.
In theory a pure lithium electrode would be the ideal electrode for a lithium -
ion battery because of the favorable properties of lithium
metal and because it allows a cycle of lithium
ions into the solid (
metal) and back into solution (lithium
ions) again during
use and recharging.