High-entropy alloys as anode materials of nickel - metal hydride batteries

被引：35
作者：
Edalati, Parisa [1 ]
Mohammadi, Abbas [2 ]
Li, Yongtao [3 ]
Li, Hai-Wen [4 ]
Floriano, Ricardo [5 ]
Fuji, Masayoshi [1 ,6 ]
Edalati, Kaveh [2 ]
机构：
[1] Nagoya Inst Technol, Dept Life Sci & Appl Chem, Tajimi, Japan
[2] Kyushu Univ, WPI Int Inst Carbon Neutral Energy Res WPI I2CNER, Fukuoka, Fukuoka, Japan
[3] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan, Peoples R China
[4] Hefei Gen Machinery Res Inst, Hefei, Peoples R China
[5] Univ Campinas FCA UNICAMP, Sch Appl Sci, Limeira, Brazil
[6] Nagoya Inst Technol, Adv Ceram Res Ctr, Tajimi, Japan
来源：
SCRIPTA MATERIALIA | 2022年 / 209卷
关键词：
High-entropy alloys (HEAs); High-entropy hydrides; Energy storage; Hydrogen storage; Ni-MH battery; HYDROGEN STORAGE; OXIDES;
D O I：
10.1016/j.scriptamat.2021.114387
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High-entropy alloys are potential candidates for various applications including hydrogen storage in the hydride form and energy storage in batteries. This study employs HEAs as new anode materials for nickel - metal hydride (Ni-MH) batteries. The TixZr2-xCrMnFeNi alloys with different Ti/Zr ratios, having the C14 Laves structure, are used. These alloys are selected because they show room-temperature hydriding/dehydriding capability. The HEAs successfully act as negative electrode of Ni-MH batteries with good charge/discharge cyclability, while there are optimum Ti/Zr ratios for the highest storage capacity and the fastest activity. These findings introduce HEAs as potential anode materials for Ni-MH battery application. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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页数：5
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