Optimization of Ti-Zr-Cr-Fe alloys for 45 MPa metal hydride hydrogen compressors using orthogonal analysis
作者
Li, Q (Li, Quan) 1, 2
Peng, ZY (Peng, Zhuoya) 1, 2
Jiang, WB (Jiang, Wenbin) 1, 2
Ouyang, LZ (Ouyang, Liuzhang) 1, 2, 3
Wang, H (Wang, Hui) 1, 2
Liu, JW (Liu, Jiangwen) 1, 2
Zhu, M (Zhu, Min) 1, 2
查看 Web of Science ResearcherID 和 ORCID (由 Clarivate 提供) JOURNAL OF ALLOYS AND COMPOUNDS
卷889
文献号161629
DOI10.1016/j.jallcom.2021.161629
出版时间DEC 31 2021
文献类型Article
摘要
A series of (Ti1-xZrx)(y)Cr2-zFez (x=0.1, 0.2, 0.3; y=1, 1.05, 1.1; z=0.9, 1, 1.1) alloys has been designed by ortho-gonal experiments for a three-stage metal hydride hydrogen compressor. XRD results show that such alloys exist as a single C14 Laves phase, and SEM with energy-dispersive spectroscopy reveals a uniform distribution of the elements. The effects of substitution of Ti by Zr, of Cr by Fe, and over-stoichiometry on the hydrogen storage properties of the Ti-Zr-Cr-Fe alloys have been investigated by orthogonal analysis. With increasing Zr content and 2A/B ratio (1, 1.05, 1.1), the cell volume and enthalpy gradually increase, while the plateau pressure and hysteresis decrease. With increasing Fe content, the cell volume and enthalpy decrease, while the plateau pressure, plateau slope, and hysteresis all dramatically increase. The (Ti0.85Zr0.15)(y)Cr2-zFez (y=1, 1.05, 1.1; z=0.9, 1, 1.1) alloys show the largest average hydrogen storage capacity at 1.73 wt%. Besides, a simple model is proposed to predict enthalpy, which is based on the unit cell volume and average electronegativity difference with hydrogen. Finally, the (Ti0.85Zr0.15)(1.05)Cr1.1Fe0.9 alloy has been selected for a three-stage metal hydride hydrogen compressor. Its maximum and usable storage capacities were evaluated as 1.75 wt% and 1.40 wt%, respectively, with a dissociation plateau pressure derived from the van't Hoff equation of 45.5 MPa at 90 degrees C. (C) 2021 Elsevier B.V. All rights reserved.
关键词
作者关键词TiCr2Metal hydrideMetal hydride hydrogen compressorOrthogonal experiment
Keywords PlusSTORAGE PROPERTIESMICROSTRUCTURETHERMODYNAMICSPERFORMANCES
作者信息
通讯作者地址
Ouyang, Liuzhang
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
通讯作者地址
Ouyang, Liuzhang
(通讯作者)
South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
2 South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China
3 Key Lab Fuel Cell Technol Guangdong Prov, China Australia Joint Lab Energy & Environm Mat, Guangzhou 510641, Peoples R China
电子邮件地址meouyang@scut.edu.cn
类别/分类
研究方向ChemistryMaterials ScienceMetallurgy & Metallurgical Engineering