Comparative study of Ga and Al alloying with ZrFe2 for high-pressure hydrogen storage
作者:
Qin, CS (Qin, Changsheng) ; Wang, H (Wang, Hui) [1] ; Jiang, W (Jiang, Wei) ; Liu, JW (Liu, Jiangwen) ; Ouyang, LZ (Ouyang, Liuzhang) ; Zhu, M (Zhu, Min)
查看 Web of Science ResearcherID 和 ORCID (由 Clarivate 提供) INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷47
期27
页13409-13417
DOI10.1016/j.ijhydene.2021.12.110
出版时间MAR 27 2022
已索引2022-05-06
文献类型Article
摘要
ZrFe2 reacts reversibly with hydrogen under extremely high hydrogen pressure and shows potential for high-pressure hydrogen compression and storage. Alloying is indispensable to tune its hydrogen storage properties for practical applications. Previous works indicated that the Al substitution for Fe would drastically decrease hydrogen storage capacity. This work used the quenching process to prepare the ZrFe2-xAlx and ZrFe2-xGax(0.1 < x < 0.2) alloys with a single C15 Laves phase structure. It was found that the presence of the second phase Zr2Fe in as-cast alloys is responsible for the capacity reduction. The quenched ZrFe1.9Al0.1 alloy delivers a maximum hydrogen storage capacity of 1.79 wt%, much higher than as-cast alloys. The comparative study further shows that ZrFe2-xGax alloys have a relatively higher equilibrium pressure than ZrFe2-xAlx alloys due to a higher bulk modulus for ZrFe2-xGax alloys by the theoretical calculations. The hydrogen storage performance test indicates that the hydrogen dissociation pressure of ZrFe1.9Ga0.1 and ZrFe1.9Al0.1 is 164.0 atm and 130.7 atm at 298 K, respectively. Our work demonstrates that ZrFe2-based alloys with a small Ga or Al substitution are suitable for high-pressure hydrogen storage applications. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
关键词
作者关键词Hydrogen storage materialsZrFe2Ga or Al alloyingQuenchingZr2Fe impurity
Keywords PlusMETAL HYDRIDETHERMODYNAMIC PROPERTIESFEENERGYTIIMPROVEMENTHYSTERESISMAGNESIUMMN
作者信息
通讯作者地址
Wang, Hui
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
2 South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
电子邮件地址mehwang@scut.edu.cn
类别/分类
研究方向ChemistryElectrochemistryEnergy & Fuels