From -196°C to 600°C: A New Alloy Pushes the Limits of Metal Materials

From -196°C to 600°C: A New Alloy Pushes the Limits of Metal Materials

On April 18, scientists from Pohang University of Science and Technology (POSTECH) achieved a significant breakthrough in materials science by successfully developing a new type of nickel-based high-entropy alloy (High-Entropy Alloy, HEA). This alloy can maintain excellent strength and toughness across an extreme temperature range from -196°C to 600°C. Traditional metals often lose stability when … Read more

In Situ Electron Microscopy Study of Dynamic Structural Changes in CuZn Bimetallic Nanoparticles

In Situ Electron Microscopy Study of Dynamic Structural Changes in CuZn Bimetallic Nanoparticles

Background Introduction Bimetallic nanocomposites have gained widespread attention due to their tunable physicochemical properties and significant applications in engineering and catalysis. In nanocomposites, the synergistic effects between metal elements often lead to excellent catalytic performance, even imparting unique properties that are not present in single metal elements. However, bimetallic alloys face issues of structural and … Read more

Efficient Electrocatalytic Hydrogen Evolution Using HEAs

Efficient Electrocatalytic Hydrogen Evolution Using HEAs

High-entropy alloys (HEAs) have become promising candidate materials for hydrogen evolution reaction (HER) electrocatalysts due to their unique cocktail electronic effect and lattice distortion effect. In this study, ultra-small (less than 2 nanometers) nanoparticles of PtRuCoNiCu HEA were highly dispersed on hierarchical nitrogen-doped carbon nanocages (hNCNC) through a low-temperature thermal reduction method, referred to as … Read more