稀土掺杂TiFe合金在广泛循环下的储氢性能和稳定性

IF 8.3 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-05-10 DOI:10.1016/j.ijhydene.2025.05.043

Zhenyu Hou , Shihai Guo , Xin Zhang , Lihong Xu , Yan Qi , Yanghuan Zhang , Ping Li , Dongliang Zhao

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引用次数: 0

摘要

研究了稀土掺杂TiFe储氢材料Ti1.05Y0.02Zr0.03Fe0.8Mn0.2合金的长期循环稳定性和储氢性能。在60℃条件下，经过2000次吸氢和脱氢循环后，合金表现出了良好的循环稳定性，保持了97.16%的容量。这种稳定性归因于ab型（Ti, Zr， Y）（Fe, Mn）相坚固的结构完整性。尽管由于相变和晶格应变导致了轻微的容量衰减，但该合金仍表现出优异的可逆吸氢和解吸性能。微观结构分析显示，随着循环的进行，颗粒尺寸减小，裂纹形成，与晶格应变的增加有关。这些发现为稀土掺杂TiFe合金的耐久性机制提供了见解，并为设计具有增强稳定性的先进储氢材料提供了指导。

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Hydrogen storage and stability of rare earth-doped TiFe alloys under extensive cycling

The Ti_1.05Y_0.02Zr_0.03Fe_0.8Mn_0.2 alloy, a rare earth-doped TiFe hydrogen storage material, was investigated for its long-term cycling stability and hydrogen storage performance. The alloy demonstrated excellent cyclic stability, retaining 97.16 % of its capacity after 2000 cycles of hydrogen absorption and desorption at 60 °C. This stability is attributed to the robust structural integrity of the AB-type (Ti, Zr, Y)(Fe, Mn) phase. Despite slight capacity decay, primarily due to phase transformation and lattice strain, the alloy exhibited excellent reversible hydrogen absorption and desorption properties. Microstructural analyses revealed particle size reduction and crack formation as cycling progressed, correlating with increased lattice strain. These findings provide insights into the mechanisms governing the durability of rare earth-doped TiFe alloys and offer guidance for the design of advanced hydrogen storage materials with enhanced stability.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.