Tuning TiFe_1-x Ni _x Hydride Thermodynamics through Compositional Tailoring.

ABSTRACT: In this study, we investigate how structural modifications induced by Fe substitution with Ni in the TiFe intermetallic alloy affect the thermodynamics of hydride formation and decomposition. The primary goal of substituting Fe with Ni was to reduce the plateau pressure of TiFe, a crucial parameter for reversible solid-state hydrogen storage applications under near-ambient conditions (below 150 °C and 50 bar). Alloy compositions TiFe_1-x Ni _x with x ≤ 0.30 were synthesized by arc melting. The structural and morphological properties were characterized using powder X-ray diffraction and scanning electron microscopy with energy-dispersive X-ray spectroscopy. The thermodynamic properties were investigated through volumetric measurements using a Sievert

SUBMITTER: Pericoli E 

PROVIDER: S-EPMC11863293 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature