（Ti0.32Cr0.30V0.3）1-xFex合金复合Mg基储氢材料性能研究

邓静; 苑慧萍; 于庆河; 武媛方; 王少华; 王树茂

doi:10.19912/j.0254-0096.tynxb.2025-0718

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（Ti_0.32Cr_0.30V_0.3）_1-_xFe_x合金复合Mg基储氢材料性能研究

更新时间：2026-10-15

- （Ti_0.32Cr_0.30V_0.3）_1-_xFe_x合金复合Mg基储氢材料性能研究
- Vol. 47, Issue 9, Pages: 131-137(2026)
- 作者机构：
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- DOI：10.19912/j.0254-0096.tynxb.2025-0718
  CLC： TK91
- Online First：10 October 2026，
  
  Published：2026
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邓静, 苑慧萍, 于庆河, et al. （Ti_0.32Cr_0.30V_0.3）_1-_xFe_x合金复合Mg基储氢材料性能研究[J]. 2026, 47(9): 131-137. DOI: 10.19912/j.0254-0096.tynxb.2025-0718.
DOI：

邓静, 苑慧萍, 于庆河, et al. （Ti_0.32Cr_0.30V_0.3）_1-_xFe_x合金复合Mg基储氢材料性能研究[J]. 2026, 47(9): 131-137. DOI: 10.19912/j.0254-0096.tynxb.2025-0718. DOI：

摘要

该文设计并制备了具有高储氢容量的BCC结构的（Ti0.32Cr0.30V0.38）1-xFex （x=0、0.07、0.17）合金

并采用原位氢化球磨法将其与Mg复合

研究不同Fe含量的（Ti0.32Cr0.30V0.38）1-xFex合金对Mg基储氢材料的动/热力学性能的影响。采用Sievert’s体积法测试了合金及复合材料的储氢性能并使用XRD、SEM、TEM等对结构和形貌进行表征。结果表明

当x=0.07时

复合材料表现出最佳的储氢性能

起始放氢温度降低至219 ℃

在260 ℃下80 min内的放氢容量为4.22%（质量分数）

放氢焓变较相同制备方法得到的MgH2材料降低了13 kJ/mol。随着合金中Fe元素的增加

复合材料的放氢活化能逐渐降低

Mg/（Ti0.32Cr0.30V0.38）0.83Fe0.17的放氢活化能最低

为80.48 kJ/mol

主要原因在于原位生成的Mg2FeH6为放氢反应提供了活性位点

合金元素与Mg之间的电子转移使Mg的电子云密度降低

有利于H原子的解离。机理分析表明

（Ti0.32Cr0.30V0.38）0.93Fe0.07具有较高的硬度且在氢化球磨过程中抗粉化

更有利于Mg/（Ti0.32Cr0.30V0.38）0.93Fe0.07复合材料的晶粒细化和γ-MgH2的形成

使得复合材料的热力学性能提升。

Abstract

The （TiCrV）Fe（=0、0.07、0.17） alloys with a BCC structure and high hydrogen storage capacity were designed and prepared. These alloys with varying Fe contents were composited with Mg via reactive ball milling under a hydrogen atmosphere to study their effects on the kinetic and thermodynamic properties of the Mg-based hydrogen storage materials. The hydrogen storage properties of the alloys and composites were evaluated by Sieverts’volumetric method

while their microstructures were characterized by XRD

SEM

and TEM. The results demonstrate that the composite with =0.07 exhibits optimal hydrogen storage performance

showing a reduced onset dehydrogenation temperature of 219 ℃ and a hydrogen desorption capacity of 4.22 wt% within 80 minutes at 260 ℃. Further

the dehydrogenation enthalpy is decreased by 13 kJ/mol compared to MgH prepared via the same synthesis method. The dehydrogenation activation energy of the composite exhibits a gradual reduction with increasing Fe content in the alloy. The Mg/（TiCrV）Fe composite exhibits the lowest dehydrogenation activation energy of 80.48 kJ/mol. The researche reveals that the in-situ formed MgFeH provides active sites for the dehydrogenation reaction

while the electron transfer between the alloy elements and Mg reduces the electron cloud density of Mg

thereby facilitating the dissociation of H atoms. The mechanism analysis reveals that （TiCrV）Fe exhibits high hardness and resists pulverization during reactive ball milling. These characteristics are more conducive to grain refinement and the formation of γ-MgH in the Mg/（TiCrV）Fecomposite

ultimately enhancing its thermodynamic performance.

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