Nanoconfined 2LiBH4–MgH2–TiCl3 in carbon aerogel scaffold for reversible hydrogen storage
Nanoconfined 2LiBH4–MgH2–TiCl3 in carbon aerogel scaffold for reversible hydrogen storage
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DOI：
10.1016/j.ijhydene.2012.12.123
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发表时间：
2013-03
影响因子：
7.2
通讯作者：
Rapee Gosalawit-Utke;C. Milanese;Payam Javadian;J. Jepsen;Daniel Laipple;Fahim Karmi;J. Puszkiel;T. Jensen;A. Marini;T. Klassen;M. Dornheim
中科院分区：
文献类型：
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作者：
Rapee Gosalawit-Utke;C. Milanese;Payam Javadian;J. Jepsen;Daniel Laipple;Fahim Karmi;J. Puszkiel;T. Jensen;A. Marini;T. Klassen;M. Dornheim
Nanoconfinement of 2LiBH4–MgH2–TiCl3in resorcinol–formaldehyde carbon aerogel scaffold (RF–CAS) for reversible hydrogen storage applications is proposed. RF–CAS is encapsulated with approximately 1.6 wt. % TiCl3by solution impregnation technique, and it is further nanoconfined with bulk 2LiBH4–MgH2via melt infiltration. Faster dehydrogenation kinetics is obtained after TiCl3impregnation, for example, nanoconfined 2LiBH4–MgH2–TiCl3requires ∼1 and 4.5 h, respectively, to release 95% of the total hydrogen content during the 1st and 2nd cycles, while nanoconfined 2LiBH4–MgH2(∼2.5 and 7 h, respectively) and bulk material (∼23 and 22 h, respectively) take considerably longer. Moreover, 95–98.6% of the theoretical H2storage capacity (3.6–3.75 wt. % H2) is reproduced after four hydrogen release and uptake cycles of the nanoconfined 2LiBH4–MgH2–TiCl3. The reversibility of this hydrogen storage material is confirmed by the formation of LiBH4and MgH2after rehydrogenation using FTIR and SR-PXD techniques, respectively.
