In-situ formation of medium-entropy alloy nanopump to boost hydrogen storage in Mg-based alloy

被引：26
作者：
Si, Tingzhi [1 ]
Yin, Fuhu [1 ]
Zhang, Xiangxiang [1 ]
Zhang, Qing'an [1 ]
Liu, Dongming [1 ]
Li, Yongtao [1 ]
机构：
[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China
来源：
SCRIPTA MATERIALIA | 2023年 / 222卷
基金：
中国国家自然科学基金;
关键词：
Medium-entropy alloy; Mg-based alloy; Kinetics; Catalytic effect; CR;
D O I：
10.1016/j.scriptamat.2022.115052
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The Mg-based alloy with in-situ formed Ti0.35V0.35Nb0.2Cr0.1 medium-entropy alloy (MEA) nanoparticles was first prepared by a facile mechanochemistry method to resolve its sluggish hydrogen storage kinetics. This novel alloy can absorb a hydrogen capacity of approximately 0.70 wt.% at room-temperature and 2.62 wt.% at 100 & DEG;C with faster kinetics, where its apparent activation energy was greatly decreased to 85.1 kJ mol-1 from 163.7 kJ mol- 1 for pure Mg. The in-situ construction of MEA nanoparticles serves as a catalytic agent that was confirmed as an efficient route to improve hydrogen storage kinetics of Mg-based alloy.
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页数：6
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