Optimizing Ti-Zr-Cr-Mn-Ni-V alloys for hybrid hydrogen storage tank of fuel cell bicycle

作者：Tu, Bing; Wang, Hui^*; Wang, Yin; Li, Rui; Ouyang, Liuzhang; Tang, Renheng^*

来源：International Journal of Hydrogen Energy, 2022, 47(33): 14952-14960.

DOI：10.1016/j.ijhydene.2022.03.018

• Hydrogen storage alloys
• Ti-based laves phase alloy
• Alloying
• Hybrid tank

AB(2)-type Ti-based alloys with Laves phase have advantages over other kinds of hydrogen storage intermetallics in terms of hydrogen sorption kinetics, capacity, and reversibility. In this work, Ti-Zr-Cr-based alloys with progressive Mn, Ni, and V substitutions are developed for reversible hydrogen storage under ambient conditions (1-40 atm, 273-333 K). The optimized alloy (Ti0.8Zr0.2)(1.1)Mn1.2Cr0.55Ni0.2V0.05 delivers a hydrogen storage capacity of 1.82 wt%, the hydrogenation pressure of 10.88 atm, and hydrogen dissociation pressure of 4.31 atm at 298 K. In addition, fast hydrogen sorption kinetics and low hydridingdehydriding plateau slope render this alloy suitable for use in hybrid hydrogen tank of fuel cell bicycles.