Study on high rate discharge performance and mechanism of AB(5) type hydrogen storage alloys
文献类型：期刊论文
| 作者 | J. H. Guo ; D. M. Chen ; Y. Jun ; J. H. Zhang ; G. Z. Liu ; Y. Ke |
| 刊名 | Journal of Rare Earths
 |
| 出版日期 | 2004 |
| 卷号 | 22期号:4页码:509-513 |
| 关键词 | storage energy technology hydrogen storage alloy discharge capacity activity high rate dischargeability rare earths electrochemical properties particle-size |
| ISSN号 | 1002-0721 |
| 中文摘要 | The effects of surface treatment, particle size distribution, rare earth composition and B additive on the high rate discharge performance of hydrogen storage alloys were investigated. It is found that the activity, discharge capacity and high rate dischargeability of the alloys are improved after physical and chemical modification as a result of the increase of the surface area and formation of the electrocatalysis layers, which increase both the electrochemical reaction rate on the alloy surface and H diffusion rate in the alloy bulk. It is also found that both the over-coarse and over-fine particle size increase the contact resistance of the electrode, resulting in a decrease of discharge capacity, deterioration of high rate dischargeability and lower discharge plateau. In another word, a suitable particle size distribution can enhance the alloy activity, discharge capacity and high rate dischargeability. In addition, the high rate dischargeability is enhanced by increasing La content and decreasing Cc content of the alloy composition because of enlargement of the unit cell volume and the improvement of the surface activity. Moreover, B additive resultes in the formation of the second phase, and makes the alloys easier pulverization, which greatly improves the activity, discharge capacity and high rate dischargeability. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35364]  |
| 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 | J. H. Guo,D. M. Chen,Y. Jun,et al. Study on high rate discharge performance and mechanism of AB(5) type hydrogen storage alloys[J]. Journal of Rare Earths,2004,22(4):509-513. |
| APA | J. H. Guo,D. M. Chen,Y. Jun,J. H. Zhang,G. Z. Liu,&Y. Ke.(2004).Study on high rate discharge performance and mechanism of AB(5) type hydrogen storage alloys.Journal of Rare Earths,22(4),509-513. |
| MLA | J. H. Guo,et al."Study on high rate discharge performance and mechanism of AB(5) type hydrogen storage alloys".Journal of Rare Earths 22.4(2004):509-513. |
入库方式： OAI收割
来源：金属研究所
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