FeCoNiCuPt high-entropy alloy nanoparticles with small sizes (3–7 nm) and different Pt contents have been successfully synthesized by a facile solid-state reaction method.

A 6 Tesla high magnetic field (HMF) was separately introduced into the nucleation stage and growth stage and into both stages during the wet-chemical synthesis of FePt nanoparticles.

The intermetallic L 1 ₀ -NiCo electrocatalysts play a crucial role in reducing energy consumption, improving hydrogen production rates, and prolonging the service life of alkaline electrolyzers.