作者:Li, ZM (Li, Ziming)[1,2 ]; Wang, H (Wang, Hui)[1,2,3 ]; Ouyang, LZ (Ouyang, Liuzhang)[1,2,3 ]; Liu, JW (Liu, Jiangwen)[1,2,3 ]; Zhu, M (Zhu, Min)[1,2,3 ]
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文献类型:Article
The strategy of partial substitution was adopted on the A-side of Y-Fe-Al alloys and Y-M-Fe-Al (M = Zr, Ti, V) quaternary alloys with C15 Laves phase were successfully prepared. Reversible hydrogen storage could be realized in these alloys without hydrogen-induced amorphization or disproportionation. The Y-M-Fe-Al alloys showed fast kinetics properties, completing de-/absorption processes within 500s. The Y0.9V0.1Fe1.7Al0.3 alloy could release the maximum amount of hydrogen with 0.79 wt%, which is almost twice as that of YFe1.7Al0.3 alloys. The improvement could be due to the increased desorption equilibrium pressure in Y-M-Fe-Al alloys, which increased from 0.168 to 1.203 atm. Neutron diffraction result indicated that H atoms occupied A2B2 tetrahedral sites in the C15 lattice. Thus, the size of the A2B2 tetra-hedral sites and the hydride formation enthalpy of the substituted alloys were calculated, aiming to figure out a rough relation between them and the desorption equilibrium pressure, while providing some constructive suggestions on composition design in future research. (C) 2019 Elsevier B.V. All rights reserved.
作者关键词:Hydrogen storage alloys; YFe2; A-side substitution; Equilibrium pressure
KeyWords Plus:HYDROGEN STORAGE PROPERTIES; MAGNETIC-PROPERTIES; INTERMETALLIC COMPOUNDS; HYDRIDING PROPERTIES; CYCLIC STABILITY; TI; ABSORPTION; TRANSITIONS; CAPACITY; MICROSTRUCTURE
通讯作者地址:Zhu, M (通讯作者)
 | South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China. |
| South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China. |
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电子邮件地址:memzhu@scut.edu.cn
| 基金资助机构 | 授权号 |
|---|---|
| Foundation for Innovative Research Groups of the National Natural Science Foundation of China | NSFC51621001 |
| International Science & Technology Cooperation Program of China | 2015DFA51750 |
| National Natural Science Foundation of China Projects | 51431001 U1601212 |
| Natural Science Foundation of Guangdong Province of China | 2016A030312011 2014A030311004 |
| Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2014) |