Advanced nanocrystalline Zr-based AB(2) hydrogen storage electrode materials for NiMH EV batteries
文献类型：期刊论文
| 作者 | L. Chen ; F. Wu ; M. Tong ; D. M. Chen ; R. B. Long ; Z. Q. Shang ; H. Liu ; W. S. Sun ; K. Yang ; L. B. Wang ; Y. Y. Li |
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 1999 |
| 卷号 | 293页码:508-520 |
| 关键词 | nanocrystalline electrode materials Zr-based AB(2) hydrogen storage alloys complete crystallization method from amorphous solids metallurgical structure and crystal-structure electrochemical properties hydriding properties system alloys cr |
| ISSN号 | 0925-8388 |
| 中文摘要 | The metallurgical microstructure, crystal-structure and electrochemical properties of Laves phase Zr-V-Mn-Ni system alloys (modified with Ti, Co, Sn, etc.) were investigated systematically in the present paper. Conventional polycrystalline Zr-based alloys, which consist of cubic C15 Laves phase, hexagonal C14 Laves phase and non-laves phase (such as Zr7Ni10, Zr9Ni11, Zr(NiMn)Sn-0.35), show the highest discharge capacity of 342 mAh g(-1) (at 60 mA g(-1) charge-discharge current), which decreases by 7.8% after 300 cycles. Amorphous phase alloys in melt-spun alloys exhibit poor electrochemical properties. Advanced nanocrystalline C15-Laves single-phase alloys were prepared by completely crystallizing the melt-spun amorphous Zr1-xTix[(NiVMnCo)(1-nu)Sn-nu](2+alpha) alloys. These alloys have a special microstructure composed of high-density interface phase and random-oriented grains varying from several nanometres to several dozens of nanometres. It was found that these materials had high discharge capacity (the maximum capacity is up to 379 mAh g(-1)) and long cycle life (the capacity only decreases 3% after 300 cycles). The maximum discharge capacities were found in the metallurgical microstructure and crystal-structure in Zr-based AB(2) alloys. The maximum discharge capacity increases in regular nanocrystalline/C15-Laves single-phase>polycrystalline/multi-phase (Laves and non-laves)>comorphous state/C15-Laves single-phase. It was shown that the complete crystallization method from amorphous solids is an effective way to greatly improve the electrochemical performance of Zr-based AB(2) hydrogen storage electrode materials, which is not only significant for academic research but also valuable for practical applications in the NiMH battery system for pure electric vehicles (PEV) and hybrid electric vehicles (HEV). (C) 1999 Elsevier Science S.A. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37323]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. Chen,F. Wu,M. Tong,et al. Advanced nanocrystalline Zr-based AB(2) hydrogen storage electrode materials for NiMH EV batteries[J]. Journal of Alloys and Compounds,1999,293:508-520. |
| APA | L. Chen.,F. Wu.,M. Tong.,D. M. Chen.,R. B. Long.,...&Y. Y. Li.(1999).Advanced nanocrystalline Zr-based AB(2) hydrogen storage electrode materials for NiMH EV batteries.Journal of Alloys and Compounds,293,508-520. |
| MLA | L. Chen,et al."Advanced nanocrystalline Zr-based AB(2) hydrogen storage electrode materials for NiMH EV batteries".Journal of Alloys and Compounds 293(1999):508-520. |
入库方式： OAI收割
来源：金属研究所
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