Ti-Cr-Mn-Fe-based alloys optimized by orthogonal experiment for 85 MPa hydrogen compression materials
作者
Peng, ZY (Peng, Zhuoya) 1, 2
Li, Q (Li, Quan) 1, 2
Sun, JY (Sun, Jiangyong) 3
Chen, K (Chen, Kang) 1, 2
Jiang, WB (Jiang, Wenbin) 1, 2
Wang, H (Wang, Hui) 1, 2
Liu, JW (Liu, Jiangwen) 1, 2
Ouyang, LZ (Ouyang, Liuzhang) 1, 2, 4
Zhu, M (Zhu, Min) 1, 2
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卷891
文献号161791
DOI10.1016/j.jallcom.2021.161791
出版时间JAN 25 2022
文献类型Article
摘要
The development of hydrogen storage alloys possessing high plateau pressures for three-stage metal hy-dride hydrogen compressors (MHHCs), is critically significant for the safe and high-efficiency re-/charging of H2 in hydrogen refueling stations (HRSs). Herein, Ti-Cr-Mn-Fe-based alloys (Ti1.04+xCr2-y-zMnyFez, x = 0.02, 0.04, 0.06, y = 0.2, 0.3, 0.4, z = 0.5, 0.6, 0.7) synthesized by vacuum arc melting, with the single structure of C14 Laves and uniform element distribution, enable the final-stage compression units up to 85 MPa for MHHCs. It is demonstrated that both unit cell volume and maximum hydrogen capacity (C,,,ax) increase by the rising amount of Ti or decreasing Mn and Fe in the Ti-Cr-Mn-Fe-based alloys, whereas the dissociation pressures and plateau hysteresis (H-f) at 223 K are reduced correspondingly, according to the orthogonal results. Meanwhile, as the over-stoichiometric amount of Ti increases, so does the plateau slope (S-f) of the Ti-Cr-Mn-Fe-based alloys. Under the optimized conditions conducted by the orthogonal results, Ti1.08Cr1.3Mn0.2Fe0.5 exhibits comprehensively considerable hydrogen absorption/desorption properties, rendering it possible to be one of the most promising final-stage compression materials. Notably, the de-hydrogenation enthalpy and entropy for Ti1.08Cr1.3Mn0.2Fe0.5 is determined to be 22.3 +/- 0.3 kJ/mol and 117.8 +/- 1.0 J/(mol K), respectively, with a corresponding hydrogen absorption pressure of 14.00 +/- 0.52 MPa at 298 K and a dehydriding pressure of 89.19 +/- 3.21 MPa at 363 K. Furthermore, the values of C-max, H-f, and S-f are evaluated as 1.83 +/- 0.01 wt%, 0.33 +/- 0.01, and 0.72 +/- 0.03, respectively, at 223 K. (C) 2021 Elsevier B.V. All rights reserved.
关键词
作者关键词Ti-Cr-Mn-Fe-based alloysOrthogonal experimentMetal hydride hydrogen compressorsFinal-stage hydrogen compression materialsAlloying
Keywords PlusMETAL HYDRIDETHERMODYNAMIC PROPERTIESSTORAGE PROPERTIESEQUILIBRIUM PRESSUREPERFORMANCESYSTEMFORM
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
通讯作者地址
Sun, Jiangyong
(通讯作者)
Guangdong Acad Sci, Inst Mat & Proc, Guangzhou 510651, 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 Guangdong Acad Sci, Inst Mat & Proc, Guangzhou 510651, Peoples R China
4 China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Peoples R China
电子邮件地址sunjiangyong@gimp.gd.cnmeouyang@scut.edu.cn
类别/分类
研究方向ChemistryMaterials ScienceMetallurgy & Metallurgical Engineering