Harvesting PdH Employing Pd Nano Icosahedrons via High Pressure.

Palladium hydrides (PdH ) have important applications in hydrogen storage, catalysis, and superconductivity. Because of the unique electron subshell structure of Pd, quenching PdH materials with more than 0.706 hydrogen stoichiometry remains challenging.

Structural diversity and hydrogen storage properties in the system K-Si-H.

KSiH exhibits 4.1 wt% experimental hydrogen storage capacity and shows reversibility under moderate conditions, which provides fresh impetus to the search for other complex hydrides in the K-Si-H system. Here, we reproduce the stable 3̄ phase of KSiH and uncover two denser phases, space groups 3̄1 and 6 at ambient pressure, by means of first-principles structure searches.

Phase transitions and properties of lanthanum under high pressures.

Lanthanum (La), the first member of the lanthanide elements, recently aroused interests due to the discovery of high-superconductor LaHunder high pressures and its unique superconducting properties. Here, we study the phase transitions, superconductivity and mechanical properties of metallic La under high pressures by first-principle calculations. The known face-centered cubic (fcc) phase with space groupFm3¯mstill exists above 100 GPa.

A novel differential display material: KLuSiO: Tb/Bi phosphor with thermal response, time resolution and luminescence color for optical anti-counterfeiting.

Optical anti-counterfeiting and encryption have become a hotspot in information security. However, the advanced optical anti-counterfeiting technology still suffers from low security by single-luminescent mode. Herein, we present a novel multi-mode anti-counterfeiting strategy based on KLuSiO: Tb/Bi (KLSO: Tb/Bi) phosphors for the first time.

Pressure-Induced Superionicity of H in Hypervalent Sodium Silicon Hydrides.

Superionic states simultaneously exhibit properties of a fluid and a solid. Proton (H) superionicity in ice, HO, He-HO, and He-NH compounds is well-studied. However, hydride (H) superionicity in H-rich compounds is rare, being associated with instability and strongly reducing conditions.