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Performance Modulation of AB 2 -Type Ti-Mn-Based Alloys for Compact Solid-State Hydrogen Storage Tank

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  • Qi Zhao

    (Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, China)

  • Hui Wang

    (Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, China)

Abstract

This study aims to develop an AB 2 -type Ti-Mn-based alloy with low operating pressure and favorable activation performance for use in a compact hydrogen storage tank. The optimized alloy, Ti 0.75 Zr 0.25 Cr 0.75 Mn 1.2 + 1.5 wt.% Ce, was produced at scale and exhibits a maximum hydrogen storage capacity of 1.87 wt.% and excellent hydrogen activation properties. Furthermore, compositing the mass-produced alloy with 5 wt.% aluminum foam increases the hydride tank’s hydrogen discharge rate by 50%. A prototype aluminum tank containing 57.8 g of hydrogen is demonstrated to stably supply hydrogen to a 220 W fuel cell, enabling continuous operation at rated power output. The work provides a material solution with potential industrial applicability for compact, low-pressure hydrogen storage systems.

Suggested Citation

  • Qi Zhao & Hui Wang, 2025. "Performance Modulation of AB 2 -Type Ti-Mn-Based Alloys for Compact Solid-State Hydrogen Storage Tank," Energies, MDPI, vol. 18(18), pages 1-11, September.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:18:p:4980-:d:1753256
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