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Effect of La/Y Ratio on Properties of A2 B7 -Type La-Y-Ni Hydrogen Storage Alloy
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Wenwen LIU, Huasheng LAI, Yuxiang WANG, Youchi ZHOU
Mining and Metallurgical Engineering | 2023, 43(2) : 149 - 153
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Mining and Metallurgical Engineering | 2023, 43(2): 149-153
• MATERIALS •
Effect of La/Y Ratio on Properties of A2 B7 -Type La-Y-Ni Hydrogen Storage Alloy
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Wenwen LIU, Huasheng LAI, Yuxiang WANG, Youchi ZHOU
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  • Ganzhou Nonferrous Metallurgy Research Institute Co Ltd, Ganzhou 341000, Jiangxi, China
Published: 2023-04-01 doi: 10.3969/j.issn.0253-6099.2023.02.033
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A2B7-type LaxY3-xNi9.7Mn0.5Al0.3 (x=0.2, 0.4, 0.6, 0.8, 1.0) hydrogen storage alloys with different La/Y ratios were prepared by vacuum melting. The effect of partial substitution of La by Y element on the structure and properties of the alloy was systematically investigated by using XRD, SEM, gas-phase PCT curves and electrochemical charge-discharge cycle curves. The experiment results show that the prepared alloy has Ce2Ni7 as its main phase and contains a small amount of Gd2Co7, PuNi3 and LaNi5 phases. The abundance of main Ce2Ni7 phase increases gradually with the increase of La/Y ratio. When the La/Y ratio is 1∶2, the LaY2Ni9.7Mn0.5Al0.3 alloy has the maximum hydrogen absorption capacity of 1.317%. After 150 charge-discharge cycles, the alloy can have its highest capacity retention rate at 54.2%.

hydrogen storage alloy  /  La/Y ratios  /  La-Y-Ni hydrogen storage alloy  /  A2B7-type  /  hydrogen absorption
Wenwen LIU, Huasheng LAI, Yuxiang WANG, Youchi ZHOU. Effect of La/Y Ratio on Properties of A2 B7 -Type La-Y-Ni Hydrogen Storage Alloy[J]. Mining and Metallurgical Engineering, 2023 , 43 (2) : 149 -153 . DOI: 10.3969/j.issn.0253-6099.2023.02.033
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Year 2023 volume 43 Issue 2
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doi: 10.3969/j.issn.0253-6099.2023.02.033
  • Receive Date：2022-11-25
  • Online Date：2026-03-05
  • Published：2023-04-01
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  • Received：2022-11-25
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    Ganzhou Nonferrous Metallurgy Research Institute Co Ltd, Ganzhou 341000, Jiangxi, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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