Metal halide perovskites (MHPs) are currently receiving great attention because of their photophysical properties and concomitant promise for use in both solar cells and light emitting diodes, however, fundamental properties surrounding the atomic-scale dynamics remain unclear for these materials. In this contribution, we report on results from inelastic and quasielastic neutron scattering...
Hydrogen gas is a key energy carrier for a decarbonized energy system, especially when generated by water electrolysis. Molybdenum disulfide (MoS₂) offers a cost-effective alternative to platinum catalysts for the hydrogen evolution reaction (HER) [1], though its performance remains limited by slow hydrogen dynamics and incomplete understanding of adsorption and reactivity mechanisms. This...
Praseodymium-doped magnetite ($\mathrm{Pr_xFe_{3-x}O_4}$, $x = 0.15$ and $0.45$) was synthesized by co-precipitation from chloride precursors to investigate the influence of lanthanide substitution on structural and magnetic properties. Both compositions crystallize in a mixed spinel structure, space group Fd-3m (no. 227), and exhibit single-phase character, as confirmed by powder X-ray...
Understanding mass transport in proton exchange membrane (PEM) fuel-cell catalyst layers requires direct links between microstructure, microscopic dynamics, and macroscopic performance. In these electrodes, the relative spatial distribution of water and ionomer within a complex carbon pore network critically governs water management, proton transport, and durability, yet the microscopic origin...
