氢化燃烧法合成镁基储氢合金进展

Development of Magnesium-based of Hydrogen Storage Alloys Produced by Hydriding Combustion Synthesis

以Mg2 Ni为例系统综述了氢化燃烧法制备镁基储氢合金的进展 ,包括其工作原理 ,氢化燃烧法和其它制备镁基储氢合金方法的比较 ,影响氢化燃烧的因素以及材料的氢化特性。较为详细地介绍了国内外的研究状况并进行比较 ,通过比较Mg2 Ni、Mg2 FeH6 、Mg2 CoH5等储氢合金的吸氢性能 ,指出制备镁基储氢合金的理想发展方向应该是采用复合方法获得实用产品 ,即结合氢化燃烧 ,机械合金化 ,多元化 ,纳米化等方法 ,制备非晶态合金 ,以期达到低温下吸放氢量大于 5 %(质量分数 ) ,具有良好的动力学性能 ,使用寿命长 ,低价格的效果。

The advancement of magnesium based of hydrogen storage alloys produced by hydriding combustion synthesis was reviewed systematically with Mg 2Ni as a example, including the function theory of this method, comparison of hydriding combustion synthesis and other methods, the factors of technological process and hydriding of materials. Researching status in worldwide was introduced. Compared Mg 2Ni, Mg 2FeH 6, Mg 2CoH 5, a new ideal tendency of method of producing magnesium based was analysed. Amorphous and nanocrystalline hydrogen storage alloys were produced by the method combining hydriding combustion synthesis with mechanical method and nanocrystalline and so on. This kind of alloys has large absorption/desorption capacities(more than 5 mass%), excellent kinetic properties, long longevity, low price.