研究了(TiZr0.35)(V0.5Mn1.1-xCr0.4Nix)(x=0.7~1.0)贮氢合金的相结构及电化学性能.XRD及SEM分析表明:合金主要由具有六方结构的C14型Laves相和TiNi基第二相组成,随着Ni含量x的增加,合金晶胞体积逐渐变小,C14型Laves主相含量逐渐增多.电化学测试结果表明:随着Ni含量x的增加,合金的高倍率放电性能及循环稳定性均得到显著改善;合金的贮氢容量随着Ni替代量的增加而先增后减,当x=0.9时,达到最大电化学容量404mAh/g.
参考文献
[1] | 王家淳,于荣海,刘庆.合金化与Ti基储氢合金容量及活化性能关联[J].材料科学与工艺,2005(02):166-170. |
[2] | 陈长聘,徐海鸥,王舷,陈立新.V+TiFe0.85Mn0.15复相合金的储氢特性[J].稀有金属材料与工程,2003(04):291-294. |
[3] | Ramya K et al.[J].Journal of Alloys and Compounds,2003,352:315. |
[4] | Ramya K et al.[J].Journal of Power Sources,2002,111:335. |
[5] | Tsukahara M et al.[J].Journal of Alloys and Compounds,1995,226:203. |
[6] | Lee HH et al.[J].Journal of Alloys and Compounds,1996,239:63. |
[7] | Jang KJ.;Kim DM.;Yu JS.;Lee JY.;Jung JH. .Self-discharge mechanism of vanadium-titanium metal hydride electrodes for Ni-MH rechargeable battery[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):290-294. |
[8] | Tsukahara M et al.[J].Journal of Alloys and Compounds,1996,236:151. |
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%