High-entropy alloys as anode materials of nickel - metal hydride batteries. (1st March 2022)

• Record Type: Journal Article
• Authors: Edalati, Parisa; Mohammadi, Abbas; Li, Yongtao; Li, Hai-Wen; Floriano, Ricardo; Fuji, Masayoshi; Edalati, Kaveh
• Is Part Of: Scripta materialia. Number 209(2022)
• Publication Date: 2022-03-01
• Subjects: High-entropy alloys (HEAs) -- High-entropy hydrides -- Energy storage -- Hydrogen storage -- Ni-MH battery; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2021.114387
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : 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 Ti x Zr2- x CrMnFeNi 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. Graphical abstract: Image, graphical abstract