Reversibility of the hydrogen desorption from LiBH4: a synergetic effect of nanoconfinement and Ni addition.
نویسندگان
چکیده
The reversible hydrogen capacity of LiBH(4) was improved by a combination of Ni addition, nanosizing and confinement of the active phase in a nanoporous carbon scaffold.
منابع مشابه
The role of Ni in increasing the reversibility of the hydrogen release from nanoconfined LiBH4.
Nanoconfinement and the use of catalysts are promising strategies to enhance the reversibility of hydrogen storage in light metal hydrides. We combined nanoconfinement of LiBH4 in nanoporous carbon with the addition of Ni. Samples were prepared by deposition of 5-6 nm Ni nanoparticles inside the porous carbon, followed by melt infiltration with LiBH4. The Ni addition has only a slight influence...
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Conventional (e.g. MgH2) and complex hydrides (e.g. alanates, borohydrides, and amides) are the two primary classes of solid-state hydrogen-storage materials. Many of these “high-density” hydrides have the potential to store large amounts of hydrogen by weight (up to 18.5 wt% for LiBH4) and/or volume (up to 112 gL!1 for MgH2), values that are comparable to the hydrogen content of gasoline (15.8...
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We recently reported (Yang, J.; et al. Angew. Chem., Int. Ed. 2008, 47, 882) a novel hydrogen storage composite involving a 2:1:1 LiNH2:LiBH4:MgH2 ratio. On the basis of in-depth experimental and computational analysis, this composite was found to release hydrogen via a complex multistep reaction cascade, which seeded the products of a subsequent reversible hydrogen storage reaction. This so-ca...
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ورودعنوان ژورنال:
- Chemical communications
دوره 46 43 شماره
صفحات -
تاریخ انتشار 2010