Sentences with phrase «fuel cell catalyst»

«While this catalyst combination has been used previously in aerobic oxidations, we didn't know if it would be a good fuel cell catalyst,» Stahl says.

A team of chemists from the University of Wisconsin - Madison has introduced a new fuel cell catalyst approach that uses a molecular catalyst system instead of solid catalysts.

She has extensive research experience in the development and application of novel electron microscopy techniques for energy materials, such as lithium ion battery materials and fuel cell catalysts.

Creating bare, two - metal particles provides insights into potential substitutes for costly platinum in fuel cell catalysts

Not exact matches

Another popular aspect is «greenness» — catalysts mean lower energy, cleaner processes, and environmentally friendly technologies such as fuel cells (see profile of Sarah Ball).

A LUNG - inspired hydrogen fuel cell can cut the amount of expensive catalyst needed and increase efficiency, its designers claim.

A prototype portable hydrogen fuel cell containing the nanoparticle catalyst and an organosilane substrate was fabricated.

Despite decades of research, hydrogen fuel cells have failed to replace combustion engines in cars, thanks in large part to the cost of their platinum catalysts, says Signe Kjelstrup at the Norwegian Academy of Science and Letters in Oslo.

Once researchers understand the rules for how to get specific shapes with TZPs that also assemble into larger structures, they can design materials with desired functions — for example, a membrane for a battery, a catalyst for a fuel cell, or even a therapeutic drug.

One research group has found that an iron - based catalyst works just as well as the platinum catalysts used in fuel cells today.

While displaying this behavior, the bonded platinum nanoparticles maintain an effective surface area functioning as a catalyst for chemical reactions, a discovery that could lower the production costs of platinum - catalyzed fuel cells.

The work, which appears in the November 27, 2014, edition of Science Express, points to new avenues for producing single - site supported gold catalysts that could produce high - grade hydrogen for cleaner energy use in fuel - cell powered devices, including vehicles.

«The type of catalyst we are studying is the one that will be needed in these fuel cells.»

Although the catalyst does produce oxygen from water, it does not produce hydrogen gas (H2) that can be burnt in a fuel cell.

Currently, electrolyzers (machines that split water into its constituent hydrogen and oxygen) need a catalyst, namely platinum, to run; ditto fuel cells to recombine that hydrogen with oxygen, which produces electricity.

«Superior hydrogen catalyst just grows that way: Project aim at reducing cost of hydrogen fuel cells.»

Now, a metal - free alternative catalyst for fuel cells may be at hand.

DOE Office of Science, Basic Energy Sciences and Office of Energy Efficiency and Renewable Energy, Fuel Cell Technologies Program (catalyst mass activity and durability).

They serve as catalysts to propel the most efficient fuel cells, but they are costly and rare.

The team in Bochum and Mülheim focused nevertheless on a new strategy to accommodate sensitive catalyst to the working conditions of standard fuel cells.

There's also interest in using metal catalysts to convert carbon dioxide into fuels, make fertilizers from atmospheric nitrogen and drive reactions in fuel - cell cars.

A kind of buffer protects the catalysts against the hostile conditions encountered in fuel cells, which have been to date dismissed utilization.

Rice University scientists have fabricated a durable catalyst for high - performance fuel cells by attaching single ruthenium atoms to graphene.

Catalysts that drive the oxygen reduction reaction that lets fuel cells turn chemical energy into electricity are usually made of platinum, which stands up to the acidic nature of the cell's charge - carrying electrolyte.

Efforts to reduce the waste stream from chemical manufacturing hinge on the invention of better catalysts, as do renewable energy technologies such as fuel cells and artificial photosynthesis.

Platinum is used as a catalyst in many clean energy processes, including in catalytic converters and fuel cells.

Reducing the platinum in fuel - cell catalysts could help bring hydrogen - powered vehicles to the mass market

Many commercial catalysts for fuel cells contain the precious metal platinum, which aside from being expensive, is too rare to support ubiquitous use in vehicles.

Such collaborations, Wong says, should one day make it possible to rationally design superior catalysts for affordable fuel - cell vehicles.

By doubling the power density of the fuel cell stack, GM engineers halved its size as well as halved the amount of expensive materials, such as platinum catalysts, that such fuel cells require.

Platinum is the most common catalyst in the type of fuel cells used in vehicles.

Noble metals such as platinum are useful as catalysts for versatile chemical reactions including fuel cell vehicles and reduction of CO2 emission.

This synthesis route is capable of developing alternative catalysts of noble metals for many eco-friendly technologies such as fuel cell vehicles, hydrogen generation from water and CO2 reduction.

A raft of laboratories and businesses, however, are determined to cut costs by replacing one of the most expensive components in the fuel cells: the catalyst.

Hydrogen fuel cells, which expel only water and heat as waste, are an appealing way to generate clean electricity, but the present technology relies on expensive platinum catalysts.

In April his group described an enhanced iron - based catalyst for fuel cells.

The Department of Energy estimates that half of a fuel cell's price tag comes from the platinum catalyst used to speed up the reaction that produces energy.

«A nano solution is needed to mass - produce resource - efficient catalysts for fuel cells.

Such qualities make them suitable for storing electric charge in batteries and supercapacitors, and as catalysts in solar and fuel - cell electrodes.

Rice University chemists who developed a unique form of graphene have found a way to embed metallic nanoparticles that turn the material into a useful catalyst for fuel cells and other applications.

«These composites, which have less than 1 percent metal, respond as «super catalysts» for fuel - cell applications.

Platinum is used as a catalyst in fuel cells, in automobile converters and in the chemical industry because of its remarkable ability to facilitate a wide range of chemical reactions.

Because platinum is at the center of many clean energy and green chemicals production technologies, such as fuel cells, catalytic converters, and value - added chemicals from bio-renewable feedstocks, the new, less expensive platinum - copper catalysts could facilitate broader adoption of such environmentally friendly devices and processes, she added.

A low - temperature variety of fuel cell works best at a mere 80ºC, but it is less efficient, relies on expensive catalysts, and feeds on a smaller repertoire of fuels than its high - temperature cousin.

But these dots enhance the properties of the mothership, making them better than platinum catalysts for certain reactions within fuel cells.

The mysterious workings of a new catalyst could help produce fuels from water and improve fuel cells, scientists say.

The nanoplatelets feature enough edge to make them suitable as catalysts for applications like fuel cells.

Efficient, robust and economic catalyst materials hold the key to achieving a breakthrough in fuel cell technology.

«The catalyst we studied is the fastest of its type with hydrogen, but it still isn't fast enough to put in a fuel cell and drive down the road,» said Dr. Wendy Shaw, a biophysical chemist at PNNL.

So far, lack of an inexpensive and stable catalyst has limited widespread, economical use of hydrogen fuel cells (HFCs).