Promoting the cycling stability of amorphous MgNi-based alloy electrodes by mitigating hydrogen-induced crystallization

时间:2021-04-23作者:浏览量:281


Promoting the cycling stability of amorphous MgNi-based alloy electrodes by mitigating hydrogen-induced crystallization

作者:Li, P (Li, Peng)[ 1 ] ; Wang, H (Wang, Hui)[ 1 ] ; Jiang, W (Jiang, Wei)[ 1 ] ; Liu, JW (Liu, Jiangwen)[ 1 ] ; Ouyang, LZ (Ouyang, Liuzhang)[ 1 ] ; Zhu, M (Zhu, Min)[ 1 ]

 

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

 

: 46 : 9 : 6701-6708

DOI: 10.1016/j.ijhydene.2020.11.159

 

出版年: FEB 3 2021

 

文献类型:Article

 

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摘要

MgNi-based amorphous alloy is a potential candidate to anode material of Nickel-Metal hydride battery because of its high capacity and low cost. However, the poor cycle life hinders its practical application. In this work, the effect of alloying elements (In, Al, Cu, Sc) on the thermal stability of the amorphous structure of MgNi alloy has been investigated by XRD, DSC, and TG methods. It is found that the addition of In and Al could greatly increase the crystallization temperature of the amorphous phase and impede the formation of crystalline hydride during the dis-/charging cycle. Therefore, the cycling performance of MgNi-based amorphous alloy electrodes is much improved. Therefore, it is indispensable to evaluate the role of alloying elements to the thermal stability of the amorphous structure as optimizing the composition of MgNi-based alloys. This work also suggests that the multi-component composition is beneficial to the structural and cyclic stability of MgNi-based alloys. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

 

关键词

作者关键词:Nickel-metal hydride battery; MgNi-based amorphous alloys; Hydrogen-induced crystallization; Cycle life

 

作者信息

通讯作者地址:

 

South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China.

通讯作者地址: Wang, H (通讯作者)

 

显示更多         South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China.

地址:

 

显示更多         [ 1 ]‎ South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China

电子邮件地址:mehwang@scut.edu.cn

 

基金资助致谢

基金资助机构显示详情         授权号

National Natural Science Foundation of China (NSFC)

 

U1601212

51901080

National Natural Science Foundation of China (NSFC)

 

51621001

National Natural Science Foundation of Guangdong Province

 

2016A030312011

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出版商

PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND

 

期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Chemistry; Electrochemistry; Energy & Fuels

 

Web of Science 类别:Chemistry, Physical; Electrochemistry; Energy & Fuels