Superior electrochemical performance of La-Mg-Ni-based alloys with novel A(2)B(7)-A(7)B(23) biphase superlattice structure

doi:10.1016/j.jmst.2020.10.081

IMR OpenIR

	Superior electrochemical performance of La-Mg-Ni-based alloys with novel A(2)B(7)-A(7)B(23) biphase superlattice structure
	Liu, Jingjing 1; Zhu, Shuai 1; Chen, Xiangyu 1; Xu, Jie 1; Zhang, Lu 2; Yan, Kai 1; Chen, Wei 3; Cheng, Honghui 1; Han, Shumin 2
通讯作者	Cheng, Honghui(hhcheng@yzu.edu.cn) ; Han, Shumin(hanshm@ysu.edu.cn)
	2021-07-30
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	80 页码:128-138
摘要	Nickel metal hydride (Ni-MH) rechargeable batteries hold an important position in the new-energy vehicle market owing to their key technology advantages. Their negative electrode materials-hydrogen storage alloys (HSAs) are always on the spotlight and are the key to compete with the burgeoning Li-ion batteries. Here, for the first time we report a series of biphase supperlattice HSAs with a (La,Mg)(2)Ni-7 matrix phase and a novel (La,Mg)(7)Ni-23 secondary phase. The biphase alloys show discharge capacities of 402-413 mAh g(-1) compared with 376-397 mAh g(-1) of the other multi- or single-phase alloys. These values are among the highest for superlattice HSAs. In addition, the alloy with 15.4 wt.% (La,Mg)(7)Ni-23 phase exhibits good high rate dischargeability due to the proper compromise between the amount of crystal boundaries and equilibrium plateau voltage. The cycling stability of the biphase alloys is lower than that of the single-phase alloy but is till higher than the multiphase alloy. The novel superlattice biphase alloys with superior overall electrochemical properties are expected to inspire further design and development of HSAs as advanced electrode materials for power batteries. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Nickel metal hydride battery Hydrogen storage alloy A(7)B(23)-type phase Electrochemical property Effect mechanism
资助者	National NaturalScience Foundation of China ; Natural Science Foundation of Hebei Province ; High-end Talent Support Program ofYangzhou University ; Qinglan Engineering Project ofYangzhou University
DOI	10.1016/j.jmst.2020.10.081
收录类别	SCI
语种	英语
资助项目	National NaturalScience Foundation of China[51801176] ; National NaturalScience Foundation of China[51701226] ; Natural Science Foundation of Hebei Province[E2020203081] ; Natural Science Foundation of Hebei Province[E2019203414] ; High-end Talent Support Program ofYangzhou University ; Qinglan Engineering Project ofYangzhou University
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000656122300012
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/160853
专题	中国科学院金属研究所
通讯作者	Cheng, Honghui; Han, Shumin
作者单位	1.Yangzhou Univ, Sch Mech Engn, Yangzhou 225127, Jiangsu, Peoples R China 2.Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jingjing,Zhu, Shuai,Chen, Xiangyu,et al. Superior electrochemical performance of La-Mg-Ni-based alloys with novel A(2)B(7)-A(7)B(23) biphase superlattice structure[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,80:128-138.
APA	Liu, Jingjing.,Zhu, Shuai.,Chen, Xiangyu.,Xu, Jie.,Zhang, Lu.,...&Han, Shumin.(2021).Superior electrochemical performance of La-Mg-Ni-based alloys with novel A(2)B(7)-A(7)B(23) biphase superlattice structure.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,80,128-138.
MLA	Liu, Jingjing,et al."Superior electrochemical performance of La-Mg-Ni-based alloys with novel A(2)B(7)-A(7)B(23) biphase superlattice structure".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 80(2021):128-138.