Progress in the Research and Application of High-Capacity Mg-Based Hydrogen Storage Alloy Materials
ZOU Jianxin(), ZHANG Jiaqi, ZHAO Yingyan, LIN Xi, DING Wenjiang
Shanghai Key Laboratory of Hydrogen Science & Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai 200240, China
Cite this article:
ZOU Jianxin, ZHANG Jiaqi, ZHAO Yingyan, LIN Xi, DING Wenjiang. Progress in the Research and Application of High-Capacity Mg-Based Hydrogen Storage Alloy Materials. Acta Metall Sin, 2025, 61(3): 420-436.
With the rapid advancement of the hydrogen energy industry in recent years, Mg-based solid hydrogen storage materials and their associated storage and transportation systems have garnered significant global attention, leading to numerous groundbreaking studies and remarkable progresses. In the field of material design, high-performance nano Mg-based hydrogen storage materials and modified Mg-based hydrogen storage alloys have significantly enhanced the thermodynamic stability and kinetic properties of Mg and its hydrides. These advancements enable rapid hydrogen absorption and desorption at moderate or even room temperatures, paving the way for cost-effective applications. In terms of system development, the structural design and operational parameters of Mg-based solid hydrogen storage systems have been optimized through advanced simulation techniques and innovative design strategies, thus efficient thermal management of the storage system is achieved. In terms of engineering applications, the world's first ton-level Mg-based solid-state hydrogen storage and transportation trailer has been successfully launched. Additionally, multiple demonstration projects, including Mg-based solid-state hydrogen storage systems and hydrogen refueling stations, have been initiated worldwide. This paper reviews the significant research advancements in Mg-based hydrogen storage materials, focusing on four key areas: nanocrystallization, alloying, system development, and demonstration applications. It also summarizes relevant engineering demonstrations and applications in hydrogen energy storage and transportation, providing suggestions for the future research directions and potential applications.
Fund: National Natural Science Foundation of China(52201266);National Natural Science Foundation of China(52171186);National Key Research and Development Program of China(2023YFB3809103);Postdoctoral Fellowship Program of CPSF(GZC20231546)
Corresponding Authors:
ZOU Jianxin, professor, Tel: (021)54740302, E-mail: zoujx@sjtu.edu.cn
Fig.1 Solid-state hydrogen storage materials and their volume/weight hydrogen density indicators released by the US Department of Energy (DOE)[2] (CNT—carbon nanotube)
Fig.2 MgH2-Ni@NCS nanocomposite hydrogen storage material prepared by HCS + HEBM[21] (Ni@NCS—nano-nickel particle coated nitrogen-doped carbon sphere, HCS—hydriding combustion synthesis, HEBM—high-energy ball-milling; Tm—peak temperature, Ea—activation energy, R2—goodness of fit; % refers to the mass percentage in this paper) (a) process flow (b) SEM spherical morphologies (c) dehydrogenation performance (d) cycle stability
Fig.3 Mechanism diagram of nano-confined MgH2/Ni@pCNF[32] (pCNF—porous carbon nanofiber)
Fig.4 Preparation schematic and TEM characterization of non-confined ultrafine MgH2[33] (THF—tetrahydrofuran)
Fig.5 Preparation process and performance diagrams of Mg-Ga alloy[38]
Fig.6 Mechanism diagram of hydrogen sorption in Mg95Y3Zn2 alloy[41]
Fig.7 Morphologies and hydrogen storage performance mechanism diagrams of Mg-Ni-Gd-Y-Zn-Cu alloy[43]
Fig.8 Typical TEM results of Mg93Y3Zn2Al2 alloy[44] (a) Y3Zn3Al4 phase (b) interface between Y3Zn3Al4 phase and Mg matrix (c) SAED of Y3Zn3Al4 phase (d) EDS mapping of Y3Zn3Al4 phase (e) Al2Y phase (f, g) interface between Al2Y phase and Mg matrix (h) SAED of Al2Y phase
Fig.9 Intermetallic phase transition from MgIn to Mg3In (a) and in situ XRD spectra during dedeuteration in Mg-In-D system (b)[45]
Fig.10 Effect of heat transfer oil flow rate (uf) on average reaction fraction of magnesium-nickel alloys hydrogen storage tanks (a) and reaction fraction distributions on cross-section with average reaction fraction of 0.8 (b-f)[52]
Fig.11 PID diagram of potential applications for coupling hydrogen directly heated Mg-based hydrogen storage tanks (HST) with SOEC and SOFC[53] (PID—process & instrumentation drawing, SOEC—solid oxide electrolysis cell, SOFC—solid oxide fuel cell)
Fig.12 Schematics of the traditional structure (a, c) and sandwich structure (b, d) of a Mg-based solid hydrogen storage system coupled with phase change materials[59] (R1-R4—radii of different interlayers) (a, b) top views (c, d) axial views
Fig.13 Mg-based solid hydrogen storage material developed by McPhy company (a) and Mg-based solid state hydrogen storage device (b)[60] (CPM—phase changing material, MGH—external reaction heat management)
Fig.14 The world's first ton-level magnesium-based solid hydrogen storage and transportation device (a), the second generation tank-type ton-level magnesium-based solid hydrogen storage device (b), and ton-level magnesium-based solid hydrogen storage and hydrogen refueling station (c)[61]
Fig.15 Applications of Mg-based solid state hydrogen storage and transportation technology in different industrial fields
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