采用电弧熔炼制备LaNi4.1Al0.3Mn0.4Si0.2Fex (x=0～0.4)储氢合金,借助XRD、SEM等分析LaNi4.1Al0.3Mn0.4Si0.2Fex合金的晶体结构和相组成,并研究合金的电化学性能.结果表明:合金主要由LaNi5单相组成,当x≥0.1时,在LaNi5主相上分布着些许灰色的第二相.随着LaNi4.1Al0.3Mn0.4Si0.2Fex(x=0～0.4)合金中Fe的加入量增加,合金最大放电容量由295.4 mAh/g (x=0)降低到278.2 mAh/g (x=0.4),活化次数也由10次增加到18次.同时合金200次循环后的容量保持率却由66.85％ (x=0)提高到93.33％ (x=0.4).
参考文献
| [1] | 胡子龙.贮氢材料[M].北京:化学工业出版社,2002:3. |
| [2] | Huang Yuexiang;Zhang Hong .[J].Journal of Alloys and Compounds,2000,305:76. |
| [3] | Hu WK .Studies on cobalt-free AB sub 5 -type hydrogen storage alloys[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1999(1/2):299-305. |
| [4] | Hu W-K.; .Improvement in capacity of cobalt-free Mm-based hydrogen storage alloys with good cycling stability[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):206-210. |
| [5] | Wang Yijing;Yuan Huatang;Wang Genshi .[J].Solid State Ionics,2002,148:509. |
| [6] | Tang Rui;Zhang Zhaohui;Liu Liqing et al.[J].Journal of Hydrogen Energy,2004,29:851. |
| [7] | Lei Y Q;Zhang S K et al.[J].Journal of Alloys and Compounds,2002,330-332:861. |
| [8] | Tang Rui;Liu Liqing;Liu Yongning et al.[J].Journal of Hydrogen Energy,2003,28:815. |
| [9] | 张羊换,王国清,董小平,郭世海,任江远,王新林.Fe替代Co对AB5型贮氢合金循环稳定性的影响[J].稀有金属材料与工程,2006(02):277-282. |
| [10] | Viveta S;Jouberta J M;Knospa B et al.[J].Journal of Alloys and Compounds,2003,356-357:779. |
| [11] | 邓凌峰,李新海,徐洪辉,陶芝勇,胡传跃.低钴AB5型贮氢合金的制备及电化学性能[J].中国有色金属学报,2001(z1):114-117. |
| [12] | Iwakura C;Ohkawa K;Senoh Z H et al.[J].Electrochimica Acta,2001,46:4383. |
| [13] | Yasuda K .[J].Journal of Alloys and Compounds,1997,253:621. |
| [14] | Vivet S;Joubert JM;Knosp B et al.[J].Journal of Alloys and Compounds,2003,356:779. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%