采用机械合金化方法合成了Mg-54.7%Ni-x%Pd(x=0、3、10,质量百分比)贮氢材料.通过X射线衍射分析(XRD)和贮氢性能测试,研究了Pd含量对Mg-Ni合金相形成及贮氢性能的影响.XRD分析表明,在0.30MPa的氩气气氛下球磨30h后,粉末没有形成合金相;但在523K吸氢时,Mg-54.7%Ni-x%Pd(x=0,3)与氢气反应均生成了大量的Mg2NiH4,而Mg-54.7%Ni-10%Pd的氢化物中大部分为MgH2,只形成了少量的Mg2NiH4.贮氢性能测试结果表明,所制备的材料在473K无需活化即可吸氢;同Mg-54.7%Ni-x%Pd(x=0,10)相比,Mg-54.7%Ni-3%Pd吸放氢速度最快,可逆贮氢容量最大(2.82%,质量百分比).
参考文献
| [1] | Yang Huabin;Yuan Huatang et al.Characteristics of Mg2Ni0.75M0.25 (M= Ti,Cr,Mn,Fe,Co,Ni,Cu and Zn) alloys after surface treatment[J].Journal of Alloys and Compounds,2002,330-332:640. |
| [2] | E. Grigorova;M. Khristov;M. Khrussanova;J.-L. Bobet;P. Peshev .Effect of additives on the hydrogen sorption properties of mechanically alloyed composites based on Mg and Mg_2Ni[J].International journal of hydrogen energy,2005(10):1099-1105. |
| [3] | Zaluski L;Zaluska A;Str(o)m-Olsen J O .Hydrogen absorption in nanocrystalline Mg2 Ni formed by mechanical alloying[J].Journal of Alloys and Compounds,1997,217:295. |
| [4] | Janot, R;Aymard, L;Rougier, A;Nazri, GA;Tarascon, JM .Fast hydrogen sorption kinetics for ball-milled Mg2Ni alloys[J].The journal of physics and chemistry of solids,2004(2/3):529-534. |
| [5] | Reilly J J;Wiswall R H .The reaction of hydrogen with alloys of magnesium and nickel and the formation of Mg2NiH4[J].Inorganic Chemistry,1968,7(11):2254. |
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%