Bapari, SambitSambitBapariWeissmüller, JörgJörgWeissmüller2025-05-072025-05-072025-04-13Electrochimica Acta 527: 146106 (2025)https://hdl.handle.net/11420/55511Metal hydrides that enable reversible solute exchange with a reservoir often exhibit a miscibility gap at room temperature. Misfit strain during two-phase coexistence may then lead to degradation on repeated charging/discharging cycles. Furthermore, the miscibility gap impairs continuous and uniform composition tuning for functional applications. We explore electrochemical dealloying as a pathway to macroscopic monolithic samples of nanoporous Pd–Pt with continuous solubility for H at room temperature. The ligament size is tunable in the range of 4–40 nm, and sorption isotherms suggest a miscibility-gap critical point marginally below room temperature. With a maximum hydrogen fraction of 0.5, we demonstrate a reversible actuation strain of 3.3 % and a high cycle stability.en1873-38592025Elsevierhttps://creativecommons.org/licenses/by/4.0/Dealloying | Metal hydrides | Miscibility gap | Nanoporous | Palladium alloysTechnology::620: Engineering::620.1: Engineering Mechanics and Materials ScienceNatural Sciences and Mathematics::541: Physical; TheoreticalJournal Articlehttps://doi.org/10.15480/882.1513510.1016/j.electacta.2025.14610610.15480/882.15135Journal Article