Electrochemical hydrogen storage performance of Mg3GeNi2 alloy

Jie Hou; Zhibing Liu; Yunfeng Zhu; Jiafeng Fei; Yaoting Song; Yao Zhang; Jiguang Zhang; Yana Liu; Qiuxia Chen; Liquan Li

doi:10.1016/j.intermet.2020.106961

Electrochemical hydrogen storage performance of Mg₃GeNi₂ alloy

Jie Hou, Zhibing Liu, Yunfeng Zhu, Jiafeng Fei, Yaoting Song, Yao Zhang, Jiguang Zhang, Yana Liu, Qiuxia Chen, Liquan Li

College of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Mg₃GeNi₂ hydrogen storage electrode alloy was synthesized successfully via mechanical milling followed by sintering, and its electrochemical performance as the negative electrode material in a nickel-metal hydride (Ni-MH) battery was studied for the first time. Then, different amounts of nano-nickel were added to the selected alloy with the pre-milling duration of 60 h to further improve the electrochemical performance. XRD results indicate that partial substitution of Mg by Ge in Mg₂Ni can form a stable new phase of Mg₃GeNi₂ with excellent cycle stability. Nano-Ni addition can increase dramatically the discharge capacity and electrochemical kinetics of the alloy, which is attributed to the good electrocatalytic capability of the nano-Ni. The Mg₃GeNi₂-5 wt.% nano-Ni sample shows the optimum overall properties with the best electrochemical kinetics and the highest discharge capacity.

Original language	English
Article number	106961
Journal	Intermetallics
Volume	127
DOIs	https://doi.org/10.1016/j.intermet.2020.106961
State	Published - Dec 2020

Keywords

Electrocatalyst
Electrochemical performance
Hydrogen storage electrode alloy
Mechanical milling
MgGeNi
Ni-MH battery

Access to Document

10.1016/j.intermet.2020.106961

Cite this

@article{c72b613b8da44531bd1ec552973dc785,

title = "Electrochemical hydrogen storage performance of Mg3GeNi2 alloy",

abstract = "Mg3GeNi2 hydrogen storage electrode alloy was synthesized successfully via mechanical milling followed by sintering, and its electrochemical performance as the negative electrode material in a nickel-metal hydride (Ni-MH) battery was studied for the first time. Then, different amounts of nano-nickel were added to the selected alloy with the pre-milling duration of 60 h to further improve the electrochemical performance. XRD results indicate that partial substitution of Mg by Ge in Mg2Ni can form a stable new phase of Mg3GeNi2 with excellent cycle stability. Nano-Ni addition can increase dramatically the discharge capacity and electrochemical kinetics of the alloy, which is attributed to the good electrocatalytic capability of the nano-Ni. The Mg3GeNi2-5 wt.% nano-Ni sample shows the optimum overall properties with the best electrochemical kinetics and the highest discharge capacity.",

keywords = "Electrocatalyst, Electrochemical performance, Hydrogen storage electrode alloy, Mechanical milling, MgGeNi, Ni-MH battery",

author = "Jie Hou and Zhibing Liu and Yunfeng Zhu and Jiafeng Fei and Yaoting Song and Yao Zhang and Jiguang Zhang and Yana Liu and Qiuxia Chen and Liquan Li",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = dec,

doi = "10.1016/j.intermet.2020.106961",

language = "英语",

volume = "127",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Electrochemical hydrogen storage performance of Mg3GeNi2 alloy

AU - Hou, Jie

AU - Liu, Zhibing

AU - Zhu, Yunfeng

AU - Fei, Jiafeng

AU - Song, Yaoting

AU - Zhang, Yao

AU - Zhang, Jiguang

AU - Liu, Yana

AU - Chen, Qiuxia

AU - Li, Liquan

PY - 2020/12

Y1 - 2020/12

N2 - Mg3GeNi2 hydrogen storage electrode alloy was synthesized successfully via mechanical milling followed by sintering, and its electrochemical performance as the negative electrode material in a nickel-metal hydride (Ni-MH) battery was studied for the first time. Then, different amounts of nano-nickel were added to the selected alloy with the pre-milling duration of 60 h to further improve the electrochemical performance. XRD results indicate that partial substitution of Mg by Ge in Mg2Ni can form a stable new phase of Mg3GeNi2 with excellent cycle stability. Nano-Ni addition can increase dramatically the discharge capacity and electrochemical kinetics of the alloy, which is attributed to the good electrocatalytic capability of the nano-Ni. The Mg3GeNi2-5 wt.% nano-Ni sample shows the optimum overall properties with the best electrochemical kinetics and the highest discharge capacity.

AB - Mg3GeNi2 hydrogen storage electrode alloy was synthesized successfully via mechanical milling followed by sintering, and its electrochemical performance as the negative electrode material in a nickel-metal hydride (Ni-MH) battery was studied for the first time. Then, different amounts of nano-nickel were added to the selected alloy with the pre-milling duration of 60 h to further improve the electrochemical performance. XRD results indicate that partial substitution of Mg by Ge in Mg2Ni can form a stable new phase of Mg3GeNi2 with excellent cycle stability. Nano-Ni addition can increase dramatically the discharge capacity and electrochemical kinetics of the alloy, which is attributed to the good electrocatalytic capability of the nano-Ni. The Mg3GeNi2-5 wt.% nano-Ni sample shows the optimum overall properties with the best electrochemical kinetics and the highest discharge capacity.

KW - Electrocatalyst

KW - Electrochemical performance

KW - Hydrogen storage electrode alloy

KW - Mechanical milling

KW - MgGeNi

KW - Ni-MH battery

UR - http://www.scopus.com/inward/record.url?scp=85091756750&partnerID=8YFLogxK

U2 - 10.1016/j.intermet.2020.106961

DO - 10.1016/j.intermet.2020.106961

M3 - 文章

AN - SCOPUS:85091756750

SN - 0966-9795

VL - 127

JO - Intermetallics

JF - Intermetallics

M1 - 106961

ER -

Electrochemical hydrogen storage performance of Mg₃GeNi₂ alloy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this