Metals (Ni, Fe)-Incorporated Titanate Nanotubes Induced Destabilization of LiBH4

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• 作者：Xiaoliang Si ; Fen Li ; Lixian Sun ; Fen Xu ; Shusheng Liu ; Jian Zhang ; Min Zhu ; Liu-Zhang Ouyang ; Dalin Sun ; Ying-Liang Liu
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：May 19, 2011
• 年：2011
• 卷：115
• 期：19
• 页码：9780-9786
• 全文大小：1050K
• 年卷期：v.115,no.19(May 19, 2011)
• ISSN：1932-7455

文摘

Metals (Ni, Fe)-incorporated titanate nanotubes (M鈭扵NT, M = Ni, Fe) with H₂Ti₃O₇ structure were synthesized to destabilize the LiBH₄ for hydrogen storage. The onset temperature of dehydrogenation was reduced to 100 掳C for LiBH₄ and M鈭扵NT composite, which could release 4.5 wt % hydrogen at 120 掳C and 11 wt % hydrogen at 260 掳C from LiBH₄. Our experiment results indicate that ball-milled LiBH₄/Ni鈭扵NT sample has a better dehydrogenation performance than ball-milled LiBH₄/Ni/H₂Ti₃O₇ nanotube and ball-milled LiBH₄/NiO/H₂Ti₃O₇ nanotube samples. Furthermore, one finds that the release of poisoning species like BH₃ and B₂H₆ could be inhibited by nanotube with H₂Ti₃O₇ structure rather than that with anatase structure. The interactions between LiBH₄ and different structure nanotubes are investigated by the first-principle calculation in the present work.