| 缺陷对混合稀土贮氢合金性能的影响 |
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| 引用本文： | 王连邦,袁华堂,林荫浓,周康,张允什,冯嘉帧. 缺陷对混合稀土贮氢合金性能的影响[J]. 化学学报, 1999, 57(12): 1338-1342 |
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| 作者姓名： | 王连邦 袁华堂 林荫浓 周康 张允什 冯嘉帧 |
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| 作者单位： | 南开大学新能源材料化学研究所.天津(300071);天津师范大学测试中心 |
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| 基金项目： | 国家“863”高科技项目基金资助 |
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| 摘 要： | 贮氢合金是一种重要的功能材料。在多种贮氢合金中,AB~5型稀土系贮氢合金的应用最为广泛。本文用正电子湮没技术(PAT)对AB~5型混合稀土贮氢合金的缺陷进行了研究,并结合X射线衍射(XRD)测试、循环伏安(CV)测试以及合金容量的测定,对合金的结构及性能进行了研究。结果表明,合金微观缺陷的存在能大幅度提高金的性能。
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| 关 键 词： | 贮氢合金 正电子湮灭 缺陷 Ｘ射线衍射分析 |
| 修稿时间： | 1998-12-01 |
Effect of defect on the properties of the pentanary mischmetal-based hydrogen storage alloys |
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| WANG Lian-Bang,YUAN Hua-Tang,LIN Yin-Nong,ZHOU Kang,ZHANG Yun-shi,FENG Jia-Zheng. Effect of defect on the properties of the pentanary mischmetal-based hydrogen storage alloys[J]. Acta Chimica Sinica, 1999, 57(12): 1338-1342 |
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| Authors: | WANG Lian-Bang YUAN Hua-Tang LIN Yin-Nong ZHOU Kang ZHANG Yun-shi FENG Jia-Zheng |
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| Affiliation: | Nankai University, Institute of New Energy Material Chemistry.Tianjin (300071) |
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| Abstract: | Hydrogen storage alloy is an important functional material. Of all the hydrogen storage alloys studied previously, AB5 - type mischmetal - based hydrogen storage alloy is used most widely. In this paper, positron- annihilation technique (PAT) is used to study the defect of the alloys. At the same time, X- ray diffraction (XRD), cyclic voltammetry (CV) and electrochemical capacities of the alloys are investigated to characterize the structure and properties of the alloys. Experimental results show that the microdefect in the alloys can improve the properties of the alloys apparently. |
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| Keywords: | positron - annihilation technique (PAT) AB5 - type mischmetal - based hydrogen storage alloy defect |
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