Headline: Nanoporous intermetallic compounds that boost hydrogen production

■ Release Date: 2022.10.18

■ Published by: Tohoku University

■ Keywords: hydrogen, molybdenum, catalysts

■ Abstract:

Hydrogen, a clean fuel, is incredibly dense in energy -- three times more than diesel or gasoline. Its ability to power a sustainable future has been hindered by a lack of high performing catalysts. Now, a collaborative research group has developed nanoporous molybdenum-based intermetallic compounds that could address this conundrum.

Headline: Intermetallic palladium-zinc alloy: a corrosion-resistant, highly active, low-cost electrocatalyst

■ Release Date: 2022.10.18

■ Published by: Osaka Metropolitan University

■ Keywords: palladium, zinc, catalysts

■ Abstract:

Researchers have created intermetallic alloy nanoparticles of palladium and zinc with an alternating arrangement of zinc and palladium atoms. The intermetallic alloy is more corrosion-resistant than substitutional alloys while retaining the electrocatalytic properties of both metals, which could be useful for developing new non-precious metal electrocatalysts.

Headline: Blocking the buzz: MXene composite could eliminate electromagnetic interference by absorbing it

■ Release Date: 2022.10.19

■ Published by: Drexel University

■ Keywords: vanadium, steel alloys, electromagnetic

■ Abstract:

A recent discovery by materials science researchers might one day prevent electronic devices and components from going haywire when they're too close to one another. A special coating that they developed, using a type of two-dimensional material called MXene, has shown to be capable of absorbing and disbursing the electromagnetic fields that are the source of the problem.

Headline: Storing hydrogen fuel in salts -- a step toward 'cleaner' energy production

■ Release Date: 2022.10.19

■ Published by: American Chemical Society

■ Keywords: hydrogen, clean energy, amino acids

■ Abstract:

Hydrogen gas could someday replace fossil fuels as a 'clean' energy source, producing only water and energy. However, handling large quantities of gaseous hydrogen is cumbersome, and converting it to a liquid requires vessels that can withstand extremely high pressures. Now, researchers have developed a method to store and release highly pure hydrogen with salts in the presence of amino acids.

Headline: High entropy alloys: Structural disorder and magnetic properties

■ Release Date: 2022.10.20

■ Published by: Helmholtz-Zentrum Berlin für Materialien und Energie

■ Keywords: high entropy alloys, chromium, manganese

■ Abstract:

High-entropy alloys (HEAs) are promising materials for catalysis and energy storage, and at the same time they are extremely hard, heat resistant and demonstrate great variability in their magnetic behavior. Now, a team has gained new insights into the local environment of a so-called high-entropy Cantor alloy made of chromium, manganese, iron, cobalt and nickel, and has thus also been able to partially explain the magnetic properties of a nanocrystalline film of this alloy.

Headline: Advances in water-splitting catalysts

■ Release Date: 2022.10.20

■ Published by: Rice University

■ Keywords: iridium, catalyst, hydrogen

■ Abstract:

Engineers have developed a stable water-splitting catalyst for clean hydrogen generation that could replace expensive iridium catalysts.

Headline: Solar technology breakthrough: Scalable perovskite solar cells

■ Release Date: 2022.9.12

■ Published by: Ulsan National Institute of Science and Technology(UNIST)

■ Keywords: solar, perovskite, cell

■ Abstract:

Engineers have succeeded in manufacturing potentially high efficiency, stable, and scalable perovskite solar cells (PSCs).

Headline: Calcium content determines the peak intensity ratio due to iron ions at Mössbauer spectra in pyroxene

■ Release Date: 2022.10.20

■ Published by: Osaka Metropolitan University

■ Keywords: calcium, iron ion, pyroxene

■ Abstract:

Pyroxenes are a major group of rock-forming minerals. Scientists investigated the iron ion status of a calcium-rich pyroxene, using Mössbauer spectroscopy on thin sections of single crystals. The study revealed that in pyroxene crystals consisting of roughly 50% calcium, the tensor that determines the ratios of iron ions at the Mössbauer spectral peaks in the M1 sites -- one of two types of cation positions in the pyroxene crystal structure -- is independent of the iron content but dependent on the calcium content. The research findings have clarified one of the physical properties of pyroxenes, facilitating detailed future analysis of iron using Mössbauer spectroscopy on mineral flakes.

Headline: A drop in the sea of electrons

■ Release Date: 2022.10.20

■ Published by: ARC Centre of Excellence in Future Low-Energy Electronics Technologies

■ Keywords: tungsten-disulfide, semiconductor, quantum materials

■ Abstract:

Researchers have provided a measurement of interactions between Fermi polarons in an atomically-thin 2D semiconductor, using ultrafast spectroscopy capable of probing complex quantum materials. The identification of both repulsive (long-range)and attractive (short range) interactions, and the underlying mechanisms, is an important step to unraveling the rich physics of complex quantum materials and controlling their remarkable macroscopic properties for potential use in future technologies.

Headline: Improving light absorption in perovskite/Si tandem solar cells

■ Release Date: 2022.10.22

■ Published by: Ulsan National Institute of Science and Technology(UNIST)

■ Keywords: perovskite, silicon, solar cell

■ Abstract:

Engineers have achieved a power conversion efficiency of 23.50% in a perovskite-silicon tandem solar cell built with a special textured anti-reflective coating (ARC) polymeric film.