机械合金化法制备镁基储氢材料进展

介绍了近年来机械合金化法在镁基储氢材料制备上的研究进展，讨论了机械合金化制备非晶、纳米晶镁基储氢材料的机制；从合金替代和多元复合的角度对镁基储氢材料的性能进行了论述：机械合金化法可制备出纳米晶、非晶态的镁基储氢材料，无序区和晶界浓度的增加使得氢原子的吸附和扩散更为容易，制备出的材料具有较高的活性和较快的吸放氢速度。低温吸放氢性能的改善尤其显著；最后指出了机械合金化法制备镁基储氢材料需要注意并加以解决的一些问题。

Recent Development of Mg-Based Hydrogen Storage Materials Prepared by Mechannical Alloying

Recent advances of mechanical alloying application for Mg based hydrogen storage materials was introduced. The mechanism of nano amorphous structure magnesium for hydrogen storage made by Mechanically driven crystallization of amorphous MgNi alloy during prologed milling: application in Ni MH batteries was reviewed. The properties of Mg based hydrogen storage materials were discussed by the classification of Mg based alloys and Mg based composite materials. With the increase of chaotic areas and crystal boundaries of Mg based hydrogen storage materials made by Mechanically driven crystallization of amorphous MgNi alloy during prologed milling: application in Ni MH batteries, hydrogen atoms may be absorbed and diffused in and out easily. The capability of hydrogen absorption and desorption at lower temperature is improved distinctly. And the present problems existing in preparation of Mg based hydrogen storage materials by Mechanically driven crystallization of amorphous MgNi alloy during prologed milling: application in Ni MH batteries were also pointed out.