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Platinum-graphene fuel cell catalysts show superior stability over bulk platinum

20-Sep-2019

Films of platinum only two atoms thick supported by graphene could enable fuel cell catalysts with unprecedented catalytic activity and longevity, according to a study published recently by researchers at the Georgia Institute of Technology. Platinum is one of the most commonly used catalysts for ...

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Selenium anchors could improve durability of platinum fuel cell catalysts

10-Sep-2019

Platinum has long been used as a catalyst to enable the oxidation reduction reaction at the center of fuel cell technology. But the metal's high cost is one factor that has hindered fuel cells from competing with cheaper ways of powering automobiles and homes. Now researchers at the Georgia ...

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X-ray imaging provides clues to fracture in solid-state batteries

02-Jul-2019

Solid-state batteries - a new battery design that uses all solid components - have gained attention in recent years because of their potential to hold much more energy while simultaneously avoiding the safety challenges of their liquid-based counterparts. But building a long-lasting solid-state ...

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Powerful X-ray beams unlock secrets of nanoscale crystal formation

Technique allowed continuous study of cobalt nanoparticles as they grew

09-Jan-2019

High-energy X-ray beams and a clever experimental setup allowed researchers to watch a high-pressure, high-temperature chemical reaction to determine for the first time what controls formation of two different nanoscale crystalline structures in the metal cobalt. The technique allowed continuous ...

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Solving a 75-year-old mystery might provide a new source of farm fertilizer

29-Nov-2018

The solution to a 75-year-old materials mystery might one day allow farmers in developing nations to produce their own fertilizer on demand, using sunlight and nitrogen from the air. Thanks to a specialized X-ray source at Lawrence Berkeley National Laboratory, researchers at the Georgia ...

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Boron nitride separation process could facilitate higher efficiency solar cells

04-Sep-2018

A team of semiconductor researchers based in France has used a boron nitride separation layer to grow indium gallium nitride (InGaN) solar cells that were then lifted off their original sapphire substrate and placed onto a glass substrate. By combining the InGaN cells with photovoltaic (PV) cells ...

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Spooky quantum particle pairs fly like weird curveballs

07-Jun-2018

Curvy baseball pitches have surprising things in common with quantum particles described in a new physics study, though the latter fly much more weirdly. In fact, ultracold paired particles called fermions must behave even weirder than physicists previously thought, according to theoretical ...

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Pores with a Memory

Porous polymer films with shape memory

08-Feb-2018

Whether for separation processes, photovoltaics, catalysis, or electronics, porous polymer membranes are needed in many fields. Membranes with micropores that switch between different shapes and/or sizes would expand the possibilities. Scientists have introduced a process that produces porous ...

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Nanostructure boosts stability of organic thin-film transistors

16-Jan-2018

A nanostructured gate dielectric may have addressed the most significant obstacle to expanding the use of organic semiconductors for thin-film transistors. The structure, composed of a fluoropolymer layer followed by a nanolaminate made from two metal oxide materials, serves as gate dielectric ...

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Are 20 percent of materials chemistry papers wrong?

18-Dec-2017

Can companies rely on the results of one or two scientific studies to design a new industrial process or launch a new product? In at least one area of materials chemistry, the answer may be yes -- but only 80 percent of the time. The replicability of results from scientific studies has become a ...

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