Effect of La/Ce ratio on the structure and electrochemical characteristics of La0.7-xCexMg0.3Ni2.8Co0.5 (x=0. 1-0.5) hydrogen storage alloys
文献类型：期刊论文
| 作者 | Zhang XB ; Sun DZ ; Yin WY ; Chai YJ ; Zhao MS |
| 刊名 | electrochimica acta
 |
| 出版日期 | 2005 |
| 卷号 | 50期号:9页码:1957-1964 |
| 关键词 | METAL HYDRIDE ELECTRODES PUNI3-TYPE STRUCTURE CERIUM CONTENT LAMG2NI9 CAPACITY PERFORMANCE BATTERIES |
| ISSN号 | 0013-4686 |
| 通讯作者 | zhao ms |
| 中文摘要 | the effect of la/ce ratio on the structure and electrochemical characteristics of the la0.7-xcexmg0.3ni2.8co0.5 (x = 0.1, 0.2, 0.3, 0.4, 0.5) alloys has been studied systematically. the result of the rietveld analyses shows that, except for small amount of impurity phases including lani and lani2, all these alloys mainly consist of two phases: the la(la, mg)(2)ni-9 phase with the rhombohedral puni3-type structure and the lani5 phase with the hexagonal cacu5-type structure. the abundance of the la(la, mg)(2)ni-9 phase decreases with increasing cerium content whereas the lani5 phase increases with increasing ce content, moreover, both the a and cell volumes of the two phases decrease with the increase of ce content. the maximum discharge capacity decreases from 367.5 mah g(-1) (x = 0.1) to 68.3 mah g(-1) (x = 0.5) but the cycling life gradually improve. as the discharge current density is 1200 ma g(-1), the hrd increases from 55.4% (x = 0.1) to 67.5% (x = 0.3) and then decreases to 52.1% (x = 0.5). the cell volume reduction with increasing x is detrimental to hydrogen diffusion d and accordingly decreases the low temperature dischargeability of the la0.7-xcexmg0.3ni2.8co0.5 (x = 0.1-0.5) alloy electrodes. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000227256900020 |
| 公开日期 | 2010-08-17 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/15683]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang XB,Sun DZ,Yin WY,et al. Effect of La/Ce ratio on the structure and electrochemical characteristics of La0.7-xCexMg0.3Ni2.8Co0.5 (x=0. 1-0.5) hydrogen storage alloys[J]. electrochimica acta,2005,50(9):1957-1964. |
| APA | Zhang XB,Sun DZ,Yin WY,Chai YJ,&Zhao MS.(2005).Effect of La/Ce ratio on the structure and electrochemical characteristics of La0.7-xCexMg0.3Ni2.8Co0.5 (x=0. 1-0.5) hydrogen storage alloys.electrochimica acta,50(9),1957-1964. |
| MLA | Zhang XB,et al."Effect of La/Ce ratio on the structure and electrochemical characteristics of La0.7-xCexMg0.3Ni2.8Co0.5 (x=0. 1-0.5) hydrogen storage alloys".electrochimica acta 50.9(2005):1957-1964. |
入库方式： OAI收割
来源：长春应用化学研究所
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