中文摘要：

MgH2+10%MF3 (M=Ti， Fe )( 集体部分) composites 被球工厂在氢空气准备，并且他们的氢存储行为和微观结构系统地被调查。结果证明 MgH2 的 hydriding 和 dehydriding 动力学被做 TiF3 和 FeF3 氟化物显著地改进。在 573 K，二 composites 能吸收 5.67%-6.07%( 集体部分) 在在起始的氢下面的 5 min 以内的氢 3.5 迫使 MPa，并且使放出在 6 min 以内的 5.34%-6.02% 氢。而且， composites 能很快专心于氢 313-473 K 的中等温度范围。在比较，做 TiF3 的样品比做 FeF3 的样品有更好的 hydriding-dehydriding 动力学。微观结构分析证明包括 MgF2， TiH2 和 Fe 的一些活跃粒子能在做 MF3 的 composites 的 hydriding-dehydriding 过程被形成。从季辛吉的阴谋，为 composites 的氢解吸附作用的明显的激活精力被估计到，显示做 FeF3 的合成 MgH2 显著地由于做 MF3 的催化效果被激活是 74.1 kJ/mol 为做 TiF3 合成并且 77.6 kJ/mol 为。

英文摘要：

MgH2＋10%MF3（M=Ti,Fe）（mass fraction） composites were prepared by ball-milling in hydrogen atmosphere,and their hydrogen storage behaviors and microstructure were investigated systematically.The results show that the hydriding and dehydriding kinetics of MgH2 are markedly improved by doping TiF3 and FeF3 fluorides.At 573 K,the two composites can absorb 5.67%-6.07%（mass fraction） hydrogen within 5 min under an initial hydrogen pressure of 3.5 MPa,and desorb 5.34%-6.02% hydrogen within 6 min.Furthermore,the composites can absorb hydrogen rapidly in moderate temperature range of 313-473 K.In comparison,TiF3-doped sample has a better hydriding-dehydriding kinetics than FeF3-doped sample.The microstructure analysis shows that some active particles including MgF2,TiH2 and Fe could be formed in the hydriding-dehydriding processes of the MF3-doped composites.From the Kissinger＇s plot,the apparent activation energies for the hydrogen desorption of the composites are estimated to be 74.1 kJ/mol for TiF3-doped composite and 77.6 kJ/mol for FeF3-doped composite,indicating MgH2 is significantly activated due to the catalytic effect of the doping of MF3.