| 球磨法制备的纳米晶LaNi_5的电极特性 |
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| 引用本文： | 陈朝晖,李小平,陈振华,黄培云. 球磨法制备的纳米晶LaNi_5的电极特性[J]. 电池, 1998, 0(5) |
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| 作者姓名： | 陈朝晖 李小平 陈振华 黄培云 |
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| 作者单位： | 中南工业大学非平衡材料科学与工程研究所，中南工业大学非平衡材料科学与工程研究所，中南工业大学非平衡材料科学与工程研究所，中南工业大学非平衡材料科学与工程研究所 湖南 410083，湖南 410083，湖南 410083，湖南 410083 |
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| 摘 要： | 研究了将纳米晶氢化物用作MH/Ni电池负极材料的潜在可能。研究发现用球磨电弧熔炼制备的LaNi_5得到的纳米晶粉末制备的电极具有26lmAh/g的放电容量。和用粗晶LaNi_5制备的电极相比,它更容易被活化,但循环寿命短些。这种纳米电极的这些特性被认为与球磨带来的合金特殊结构有关。
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| 关 键 词： | 纳米晶 金属氢化物 氢镍电池 LaNi_5 球磨 |
Electrode Characteristics of Nanocrystalline LaNi_5 Prepared by Ball Milling |
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| Chen Zhaohui Li Xiaopin Chen Zhenhua Huang PeiyunInstitute of Non-equilibrium Materials Science and Engineering,Central South University of Technology,Hunan. Electrode Characteristics of Nanocrystalline LaNi_5 Prepared by Ball Milling[J]. Battery Bimonthly, 1998, 0(5) |
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| Authors: | Chen Zhaohui Li Xiaopin Chen Zhenhua Huang PeiyunInstitute of Non-equilibrium Materials Science Engineering Central South University of Technology Hunan |
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| Affiliation: | Chen Zhaohui Li Xiaopin Chen Zhenhua Huang PeiyunInstitute of Non-equilibrium Materials Science and Engineering,Central South University of Technology,Hunan 410083 |
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| Abstract: | The potential application of nanocrystalline hydride as rechargeable MH/Ni battery negative electrode material was investigated. Nanocrystalline LaNi5 was obtained by ball milling pre - melted LaNi5 prepared by arc melting. The average grain size of this nanocrystalline LaNi5 was 20 nm. It was found that the electrode prepared with this ball milled powder as negative material had a discharge capacity of 261 mAh/g. It had easier activation behavior,but shorter cycle lifetime in comparison with the negative electrode prepared with polycrystalline coarse grained LaNi5. The properties of nanocrystalline electrode were attributed to the structure characteristics of the powder caused by mechanical grinding. |
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| Keywords: | :Nanocrystalline Metal Hydride MH-Ni Battery LaNi_5 Ball Milling |
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