纳米晶高熵材料中的氢储存
摘要
本研究合成了一种单相纳米晶Al-Cu-Fe-Ni-Cr高熵合金（HEA），并详细考察了其氢储存性能。采用高能风格球磨机从元素粉末合金，其中以六烷作为工艺控制剂。合成后材料在40小时球磨后呈纳米晶结构，晶格参数为0.289 nm 体心立方（BCC）相。在300℃、50 atm氢气压力下，合成的纳米晶Al-Cu-Fe-Ni-Cr HEA demonstrated remarkable hydrogen storage properties, absorbing 2.1 wt.% of hydrogen in 3 minutes. At the same temperature, it also desorbed about 1.6 wt.% of hydrogen in 6 minutes. These quick rates of absorption and desorption demonstrate how well the alloy absorbs and releases hydrogen. Additionally, the alloy showed outstanding cyclic stability, retaining almost all of its hydrogen capacity across 25 cycles with only a slight 0.2 wt.% loss. The nanocrystalline Al-Cu-Fe-Ni-Cr HEA is a potential option for hydrogen storage applications due to its outstanding cycle stability and fast kinetics of hydrogen storage and release.
引用
@article{arxiv.2509.03557,
title = {Hydrogen storage in nanocrystalline high entropy material},
author = {Yogesh Kumar Yadav and Mohammad Abu Shaz and Thakur Prasad Yadav},
journal= {arXiv preprint arXiv:2509.03557},
year = {2025}
}
备注
22 pages, 9 Figures