Dehydriding and rehydriding properties of yttrium borohydride Y(BH4)(3) prepared by liquid-phase synthesis

作者：Yan Yigang; Li Hai Wen; Sato Toyoto; Umeda Naoyashi; Miwa Kazutoshi; Towata Shin ichi; Orimo Shin ichi^*

来源：International Journal of Hydrogen Energy, 2009, 34(14): 5732-5736.

DOI：10.1016/j.ijhydene.2009.05.097

• Borohydride
• Complex hydride
• Transition metal
• Hydrogen storage
• Hydrogen

Y(BH4)(3) was prepared by liquid-phase synthesis, and its dehydriding and rehydriding properties were systematically investigated by performing thermogravimetry and differential thermal analysis (TG-DTA) and powder X-ray diffraction (XRD) measurement. The dehydriding reaction of Y(BH4)(3) starts at appropriately 460 K, and a total of 7.8 wt% of hydrogen is released up to 773 K. Phase transformation and melting are observed in Y(BH4)(3) at approximately 474 K and 499 K, respectively. Both DTA and XRD measurement results indicate that the decomposition of Y(BH4)(3) proceeds via multistep dehydriding reactions accompanied with the formation of an inter-mediate phase. Furthermore, Y(BH4)(3) is proved to be partially rehydrided.

• 出版日期2009-7