| Ce含量对贮氢合金及其电极特性的影响 |
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| 引用本文： | 李全安 桑革 等. Ce含量对贮氢合金及其电极特性的影响[J]. 稀有金属材料与工程, 2001, 30(1): 54-57 |
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| 作者姓名： | 李全安 桑革 等 |
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| 作者单位： | 1. 洛阳工学院
2. 四川大学 |
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| 基金项目： | 四川省重点科研成果与转化项目基金资助(1997-1191) |
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| 摘 要： | 研究了Ce含量对AB5型贮氢合金Mι（NiCoAlMn）5的结构、组织、电化学性能和P-C-T特性的影响，结果表明：随着Ce含量的增加，合金的点阵常数a,c，轴比c/a和单胞体积均随之减小，枝晶偏析比增大，放电容量降低，平台压升高，充放电循环稳定性提高，变化规律是先增后降；在Ce含量15at%（占A侧）时合金获得最侍珠电化学综合性能，初始放电容量只略有降低，而充放电循环稳定性明显改善。
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| 关 键 词： | 贮氢合金 金属氢化物电极 电化学性能 铈 |
| 文章编号： | 1002-185X(2001)01-0054-04 |
| 修稿时间： | 2000-01-13 |
Effect of Cerium Content on Characteristics of Ml-Based Hydrogen Storage Alloy and Its Hydride Electrode |
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| Li Quanan,Sang Ge,Chen Yungui,Li Ning,Tang Dingxiang,Tu Mingjing. Effect of Cerium Content on Characteristics of Ml-Based Hydrogen Storage Alloy and Its Hydride Electrode[J]. Rare Metal Materials and Engineering, 2001, 30(1): 54-57 |
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| Authors: | Li Quanan Sang Ge Chen Yungui Li Ning Tang Dingxiang Tu Mingjing |
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| Abstract: | Effect of cerium content on phase structure, electrochemical properties and pressure concentration temperature ( P C T ) characteristics of Ml (NiCoAlMn) 5 alloy ( Ml =Michmetal) has been investigated. Experimental results indicate that as cerium content increases, the lattice constants ( a,c ), cell volume ( V ) and axis ration ( c/a ) of the alloy decrease; the elemental segregation in dendrite increases; the discharge capacity decreases; the cycling stability increases; the plateau pressure of P C T curve increases. The alloy with 15 at% Ce has optimum comprehensive electrochemical properties. |
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| Keywords: | hydrogen storage alloy metal hydride electrode rare earth alloy electrochemical property chemical component |
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