Effect of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti–Mn-based alloys

The effects of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti-Mn-based Ti<sub>0.84</sub>Zr<sub>0.16</sub>Mn<sub>0.9+<i>x</i></sub> Cr<sub>0.7</sub>Fe<sub>0.1</sub> (<i>x</i> = 0, 0.1, 0.2) and Ti<sub>0.84</sub>Zr<sub>0.16</sub>Mn<sub>0.9</sub>Cr<sub>0.7+<i>y</i></sub> Fe<sub>0.1</sub> (<i>y</i> = 0, 0.1, 0.2, 0.3) alloys were investigated. The alloys were synthesized by arc melting and crystallized in a single C14-type Laves phase structure. With increasing Mn and Cr content, the equilibrium plateau pressures of the alloys during hydrogen absorption/desorption increased markedly, while the plateaus became flatter and the maximum hydrogen absorption capacities showed a slight decrease. Lower Mn/Cr ratios contribute to reduced hysteresis and lower plateau pressures. However, this improvement is associated with a decline in hydrogen storage capacity. The cyclic performance of the Ti<sub>0.84</sub>Zr<sub>0.16</sub>Mn<sub>0.9</sub>Cr<sub>0.7</sub>Fe<sub>0.1</sub> alloy, which exhibited excellent hydrogen storage properties, was studied. It was found that the capacity retention rate reached 96.2% after 500 hydrogenation-dehydrogenation cycles.

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Publication Details

Journal
RSC Advances
Published
2025-01-01
DOI
https://doi.org/10.1039/d5ra00542f
Citations
5
Primary Topic
Hydrogen Storage and Materials
Type
article
Field-Weighted Citation Impact
2.59
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article

Effect of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti–Mn-based alloys

Lijun Lv, Qikun Pan, Zhilin Li, Xingbo Han et al.
5 citations
RSC Advances
Hydrogen Storage and Materials
2.59
article

Effect of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti–Mn-based alloys

Lijun Lv, Qikun Pan, Zhilin Li, Xingbo Han, Jianhui Zhu, Hao Shen, Linhua Xu, T.J. Pan
article en
5 citations

Abstract

The effects of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti-Mn-based Ti<sub>0.84</sub>Zr<sub>0.16</sub>Mn<sub>0.9+<i>x</i></sub> Cr<sub>0.7</sub>Fe<sub>0.1</sub> (<i>x</i> = 0, 0.1, 0.2) and Ti<sub>0.84</sub>Zr<sub>0.16</sub>Mn<sub>0.9</sub>Cr<sub>0.7+<i>y</i></sub> Fe<sub>0.1</sub> (<i>y</i> = 0, 0.1, 0.2, 0.3) alloys were investigated. The alloys were synthesized by arc melting and crystallized in a single C14-type Laves phase structure. With increasing Mn and Cr content, the equilibrium plateau pressures of the alloys during hydrogen absorption/desorption increased markedly, while the plateaus became flatter and the maximum hydrogen absorption capacities showed a slight decrease. Lower Mn/Cr ratios contribute to reduced hysteresis and lower plateau pressures. However, this improvement is associated with a decline in hydrogen storage capacity. The cyclic performance of the Ti<sub>0.84</sub>Zr<sub>0.16</sub>Mn<sub>0.9</sub>Cr<sub>0.7</sub>Fe<sub>0.1</sub> alloy, which exhibited excellent hydrogen storage properties, was studied. It was found that the capacity retention rate reached 96.2% after 500 hydrogenation-dehydrogenation cycles.

RSC AdvancesVol. 15(22)
Zhejiang University of Science and Technology (CN), Chinese Academy of Sciences (CN), Shanghai Institute of Applied Physics (CN), Changzhou University (CN)
Openalex Percentile: Top 10%
Hydrogen Storage and Materials
2.59
DOIOpen Access PDFOpenAlex
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Effect of non-stoichiometric Mn and Cr on the hydrogen storage properties of Ti–Mn-based alloys — Lijun Lv, Qikun Pan, et al. · RSC Advances (2025) | TGRS Research Map | TGRS