Annealing temperature-dependent phase structure and electrochemical hydrogen storage properties of AB4-type La1.5Y1.5Ni12-XMnX (X 1/4 0, 1.0) superlattice alloys
作者:Wan, CP (Wan, Changpeng) [1] ; Zhao, SQ (Zhao, Shiqian) [1] ; Wang, H (Wang, Hui) [1] ; Yang, LC (Yang, Lichun) [1] ; Liu, JW (Liu, Jiangwen) [1] ; Ouyang, LZ (Ouyang, Liuzhang) [1] ; Zhu, M (Zhu, Min) [1]
卷48
期4
页1472-1481
DOI10.1016/j.ijhydene.2022.09.280
出版时间JAN 12 2023
在线发表DEC 2022
已索引2023-02-02
文献类型Article
摘要
AB4-type La1.5Y1.5Ni12-xMnx (x = 0, 1.0) alloys with the rhombohedral structure were pre-pared by optimizing the annealing temperature. As the annealing temperature rises, the hexagonal Pr5Co19-type phase transforms into the rhombohedral AB4-type phase, and the 3R-AB4-type single-phase La1.5Y1.5Ni12 and La1.5Y1.5Ni11Mn1.0 alloys could be obtained at 1120 degrees C and 1088 degrees C, respectively. The partial Mn substitution for Ni increases the subunit volume but reduces the subunit volume mismatch of the AB4-type superlattice structure, thus lowering the hydrogen absorption/desorption plateau pressure and improving the electrochemical properties. Compared with annealed multi-phase alloys or single-phase A5B19-type alloy, the AB4-type single-phase alloy exhibits better overall electrochemical performance with a maximum discharge capacity of 345.6 mAh/g, a rate performance HRD600 of 84.03%, and a capacity retention S200 of 70.12%. The La1.5Y1.5Ni11Mn1.0 alloy with the rhombohedral structure demonstrates potential as a new anode for nickel-metal hy-dride batteries.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
关键词
作者关键词Nickel-metal hydride batteryLa-Y-Ni-based superlattice alloyAB4-type structurePr5Co19-type structureElectrochemical properties
Keywords PlusMN CONTENTNILAMGSYSTEMPERFORMANCESTABILITYCEIMPROVEMENTELECTRODES
作者信息
通讯作者地址
Zhao, Shiqian;
Wang, Hui
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
所属机构
South China University of Technology
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
电子邮件地址201710103269@mail.scut.edu.cnmehwang@scut.edu.cn
类别/分类
研究方向ChemistryElectrochemistryEnergy & Fuels
引文主题
2 Chemistry
2.282 Hydrogen Chemistry & Storage
2.282.594 Hydrogen Storage
Sustainable Development Goals
07 Affordable and Clean Energy
Web of Science 类别Chemistry, PhysicalElectrochemistryEnergy & Fuels