特集
電子顕微鏡法その場観察による高容量水素貯蔵物質の反応機構解析
2012 年 37 巻 4 号 p. 314-317
詳細
2012 年 37 巻 4 号 p. 314-317
It is quite important to understand the reaction mechanism in nano-scale for tailoring much superior hydrogen storage materials. So far we have investigated the reaction mechanism of various hydrogen storage materials with high hydrogen capacity by in-situ Transmission Electron Microscopy (TEM) with Environmental Cell (EC). For example, absorption and desorption reactions of Mg/MgH2 catalyzed by Nb2O5 have been observed in nano-scale. From the results, we proposed the reaction model during hydrogen absorption at the interface between Mg and catalyst. The model shows Mg forms at the interface of MgH2 and catalyst with hydrogen diffusion through Mg phase. Moreover, we discussed the reaction mechanism of the other systems, such as NaH + NH3, Li2NH, NaAlH4, NH3BH3, and AlH3, in this report.
