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
卷: 46 期: 9 页: 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