掺杂Y_2O_3对LiAlH_4放氢性能的影响（英文）

Influences of Y_2O_3 Doping on Hydrogen Release Property of LiAlH_4

主要通过PCT设备研究了掺杂Y2O3的LiAlH4试样的放氢性能。结果显示,随着Y2O3掺杂量的增加,LiAlH4的放氢量增加,然而,当掺杂量达到某一值时,LiAlH4的放氢量随着掺杂量的增加而降低。和LiAlH4原样相比,掺杂Y2O3的试样初始放氢时间提前。此外,关于Y2O3对LiAlH4放氢速率影响的研究还发现,所有掺杂试样的放氢速率都比未掺杂原样的放氢速率快。并且所有掺杂试样的放氢速率的变化趋势都是相似的,即:随着时间的延长,放氢速率快速增大之后逐步降低。

The dehydrogenation properties of LiAlH4 doped with Y203 were investigated by PCT （Pressure-Composition- Temperature） equipment. The results show that with the increase of amount of Y2O3, the dehydrogenation amount of LiAlH4 increases, however, when the doping amount reaches a certain value, the hydrogen release amount decreases with the increase of doping amount. Compared to the LiAlH4 sample, the dehydrogenation starting time of the samples doped with Y2O3 is significantly brought forward. In addition, it can be found that the dehydrogenation rates of all the doped samples are higher than that of the original sample. The change trends of the dehydrogenation rates of all the doped samples are similar in the whole dehydrogenation process, namely, with the extension of time, the dehydrogenation rates increase firstly, and then decrease gradually.