Jung, Jee Yun Lee, Sang-In Faisal, Mohammad Kim, Hayoung Lee, Young-Su Suh, Jin-Yoo Shim, Jae-Hyeok Huh, Joo-Youl Cho, Young Whan 2024-01-19T14:33:22Z 2024-01-19T14:33:22Z 2021-09-05 2021-05-28 0360-3199 https://pubs.kist.re.kr/handle/201004/116971 This paper discusses the effect of AB2 (Ti(Cr, Fe)2) phase on the hydrogenation properties of a Ti -Fe-Cr alloy system. Five Ti-Fe-Cr based alloys were fabricated by varying the Cr content. The microstructural analysis results revealed that the fraction of the Ti(Cr, Fe)2 phase increased with the increasing Cr content. The first hydrogenation test results indicated that all the alloys could absorb a significant amount of hydrogen at room temperature (30 degrees C) without a separate activation process. This behavior improved when the Ti(Cr, Fe)2 phase existed in the AB phase; the kinetics of the first hydrogenation tended to increase with the fraction of Ti(Cr, Fe)2 phase. The enhancement in the first hydrogenation kinetics of the Ti-Fe-Cr based alloys was attributed to the synergetic effect of the interface between the AB and Ti(Cr, Fe)2 phases and the inherent fast hydrogenation of the Ti(Cr, Fe)2 phase. However, the total hydrogen storage capacity decreased when the fraction of Ti(Cr, Fe)2 phase increased. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD STORAGE PROPERTIES HYDRIDING CHARACTERISTICS FETI ACTIVATION MN MICROSTRUCTURE OXYGEN ZR Effect of Cr addition on room temperature hydrogenation of TiFe alloys Article 10.1016/j.ijhydene.2021.03.096 1 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.46, no.37, pp.19478 - 19485 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 46 37 19478 19485 scie scopus 000653102200007 2-s2.0-85104048640 Chemistry, Physical Electrochemistry Energy & Fuels Chemistry Electrochemistry Energy & Fuels Article STORAGE PROPERTIES HYDRIDING CHARACTERISTICS FETI ACTIVATION MN MICROSTRUCTURE OXYGEN ZR Hydrogen storage alloy TiFe alloy Activation Pressure-composition isotherm