%0 journal article
%@ 0013-4686
%A Bapari, Sambit,Weissmüller, Jörg
%D 2025
%J Electrochimica Acta
%N 
%P 146106 
%R doi:10.1016/j.electacta.2025.146106
%T A Pd-Pt-based Bulk Nanoporous Alloy with Continuous Solubility for Hydrogen
%U https://doi.org/10.1016/j.electacta.2025.146106
 
%X Metal 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.