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Superior electrochemical performance of La-Mg-Ni-based alloys with novel A(2)B(7)-A(7)B(23) biphase superlattice structure
Liu, Jingjing1; Zhu, Shuai1; Chen, Xiangyu1; Xu, Jie1; Zhang, Lu2; Yan, Kai1; Chen, Wei3; Cheng, Honghui1; Han, Shumin2
Corresponding AuthorCheng, Honghui(hhcheng@yzu.edu.cn) ; Han, Shumin(hanshm@ysu.edu.cn)
2021-07-30
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume80Pages:128-138
AbstractNickel 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.
KeywordNickel metal hydride battery Hydrogen storage alloy A(7)B(23)-type phase Electrochemical property Effect mechanism
Funding OrganizationNational NaturalScience Foundation of China ; Natural Science Foundation of Hebei Province ; High-end Talent Support Program ofYangzhou University ; Qinglan Engineering Project ofYangzhou University
DOI10.1016/j.jmst.2020.10.081
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000656122300012
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160853
Collection中国科学院金属研究所
Corresponding AuthorCheng, Honghui; Han, Shumin
Affiliation1.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
Recommended Citation
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.
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