Zadorozhnyy, VSarac, B.Berdonosova, E.Karazehir, T.Lassnig, A.Gammer, C.Zadorozhnyy, M.2025-01-062025-01-0620200360-31991879-348710.1016/j.ijhydene.2019.06.1572-s2.0-85069461300https://doi.org/10.1016/j.ijhydene.2019.06.157https://hdl.handle.net/20.500.14669/276022nd World Hydrogen Energy Conference (WHEC) -- JUN 17-22, 2018 -- Rio de Janeiro, BRAZILIn the present study, the hydrogen storage performance of multi-principal-component ZrTiVNiCrFe alloy produced through rapid solidification has been examined by electro-chemical methods and gas-solid reactions. XRD and EBSD analyses reveal the hexagonal Laves phase structure (type C14) with average grain size of 300 nm and root-mean-square microstrain of 0.19%. Cyclic voltammetry and electrochemical impedance spectroscopy analyses in the hydrogen sorption/desorption region give insight to the sorption/desorption kinetics and the change in the desorption charge in terms of the applied potential. The pressure-composition isotherms measured in course of gas-solid reaction confirm the hydrogen storage capacity reaching 1.6 wt% at the first hydrogenation at room temperature, then reducing to 1.3-1.4% during subsequent cycling. According to the calorimetric titration study, there is a significant hysteresis primarily caused by the non-equilibrium character of the hydrogenation process. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessMulticomponent alloysHydrogen storageCyclic voltammetryGas-solid reactionsHydride calorimetryRapid solidificationConference Object53558Q1534745WOS:000518699600023Q2