Inorganic Chemicals Industry ›› 2021, Vol. 53 ›› Issue (11): 71-76.doi: 10.19964/j.issn.1006-4990.2021-0052
• Research & Development • Previous Articles Next Articles
Received:
2021-01-22
Online:
2021-11-10
Published:
2021-11-15
CLC Number:
CHENG Liqun,ZUO Fushan. Study on preparation and properties of magnesium free hydrogen storage alloys for new energy vehicle batteries[J]. Inorganic Chemicals Industry, 2021, 53(11): 71-76.
Table 1
Cell parameters and phase content of hydrogen storage alloys with different stoichiometric ratios"
x | 相类型 | 点阵常数 | 相质量 分数/% | |
---|---|---|---|---|
a/nm | c/nm | |||
0 | LaNi5 | 0.502 3 | 0.398 3 | 47.25 |
Ce2Ni7 | 0.499 3 | 2.441 6 | 52.75 | |
0.15 | LaNi5 | 0.501 5 | 0.400 6 | 38.62 |
Ce2Ni7 | 0.500 3 | 2.432 5 | 61.38 | |
0.25 | Ce5Co19 | 0.494 5 | 4.878 5 | 20.98 |
Ce2Ni7 | 0.502 2 | 2.439 7 | 79.02 | |
0.33 | Ce2Ni7 | 0.502 6 | 2.435 8 | 93.07 |
Ce5Co19 | 0.498 7 | 4.861 2 | 6.93 | |
0.5 | Ce5Co19 | 0.491 4 | 4.868 0 | 37.76 |
Ce2Ni7 | 0.502 1 | 2.432 9 | 62.24 | |
0.75 | PuNi3 | 0.502 7 | 2.432 1 | 27.87 |
LaNi5 | 0.502 7 | 0.406 5 | 11.38 | |
Ce2Ni7 | 0.499 2 | 2.458 0 | 60.75 | |
1 | PuNi3 | 0.499 9 | 2.436 5 | 17.37 |
LaNi5 | 0.506 9 | 0.402 5 | 33.42 | |
Ce2Ni7 | 0.499 8 | 2.458 9 | 49.11 |
Table 2
Electrochemical properties of hydrogen storage alloys with different stoichiometric ratios"
x | 活化次数 | Cmax/ (mA·h·g-1) | 容量保持率 S100/% | 高倍率放电性能 HRD900/% | 氢扩散系数D0 / (10-10 cm2·s-1) | 电流密度/ (mA·cm-2) | 腐蚀电位/ V |
---|---|---|---|---|---|---|---|
0.00 | 4 | 172.7 | 14.34 | 68.23 | 1.05 | 8.758 | -0.946 |
0.15 | 4 | 345.7 | 33.70 | 75.11 | 1.82 | 8.749 | -0.938 |
0.25 | 4 | 364.2 | 74.02 | 82.77 | 2.67 | 6.585 | -0.923 |
0.33 | 3 | 372.6 | 89.01 | 83.53 | 2.80 | 5.821 | -0.922 |
0.50 | 3 | 337.4 | 77.98 | 75.73 | 1.43 | 6.801 | -0.926 |
0.75 | 2 | 191.4 | 78.36 | 74.55 | 1.12 | 6.702 | -0.930 |
1.00 | 2 | 197.4 | 79.06 | 81.03 | 1.39 | 6.747 | -0.927 |
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