Synthesis of NaAlH4/Al composites and their applications in hydrogen storage

Ianni, Enrico; Sofianos, M. Veronica; Rowles, Matthew R.; Sheppard, Drew A.; Humphries, Terry D.; Buckley, Craig E.

doi:10.1016/j.ijhydene.2018.07.072

Cited by 31 publications

(12 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[8,9,10,11,12,13,14,15] and coordination hydride hydrogen storage materials (such as LiBH 4 , NaAlH 4 , Mg(NH 2 ) 2 , etc.) [16,17,18,19,20]. Among the coordination hydrides, LiBH 4 is of special interest as materials for solid-state hydrogen storage due to its high theoretical hydrogen storage capacity of 18.5 wt.%.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Desorption Properties of LiBH4/xLiAlH4 (x = 0.5, 1, 2) Composites

Zhu

et al. 2019

Molecules

View full text Add to dashboard Cite

A detailed analysis of the dehydrogenation mechanism of LiBH4/xLiAlH4 (x = 0.5, 1, 2) composites was performed by thermogravimetry (TG), differential scanning calorimetry (DSC), mass spectral analysis (MS), powder X-ray diffraction (XRD) and scanning electronic microscopy (SEM), along with kinetic investigations using a Sievert-type apparatus. The results show that the dehydrogenation pathway of LiBH4/xLiAlH4 had a four-step character. The experimental dehydrogenation amount did not reach the theoretical expectations, because the products such as AlB2 and LiAl formed a passivation layer on the surface of Al and the dehydrogenation reactions associated with Al could not be sufficiently carried out. Kinetic investigations discovered a nonlinear relationship between the activation energy (Ea) of dehydrogenation reactions associated with Al and the ratio x, indicating that the Ea was determined both by the concentration of Al produced by the decomposition of LiAlH4 and the amount of free surface of it. Therefore, the amount of effective contact surface of Al is the rate-determining factor for the overall dehydrogenation of the LiBH4/xLiAlH4 composites.

show abstract

Section: Introductionmentioning

confidence: 99%

Hydrogen Desorption Properties of LiBH4/xLiAlH4 (x = 0.5, 1, 2) Composites

Zhu

et al. 2019

Molecules

View full text Add to dashboard Cite

show abstract

“…Various metal oxides and nitrides of metals (main group and TM) have been employed as hosts for hydrogen storage materials [91,95,101,106,147,[158][159][160][161][162][163][164][165][166][167][168][169][170][171][172]. Embedding active hydrogen-storage systems into inert nanoscaffolds has been used in the past, but reports on shells of the sulfide type are rare in the scientific literature [80].…”

Section: Main Group and Tm (Transition Metal)-oxides Sulfides And Nit...mentioning

confidence: 99%

“…Several reports have been published where the host is an actual metal matrix, usually one that is highly active in hydrogenation studies (Table 5) [40,68,94,112,121,122,138,[163][164][165][166][167][168][169][170][171].…”

Section: Metal Component/hostmentioning

confidence: 99%

“…The overall enhancement of kinetic and thermodynamic parameters can be tuned by utilization of catalysts. This is usually implemented to improve behavior of systems that already show promising results including recyclability (Table 9) [19,20,34,43,57,65,68,77,82,92,102,108,113,118,120,125,131,132,134,136,139,143,147,158,160,[166][167][168]172,[183][184][185][186][187][188][189][190][191][192]194,[196][197][198][199][200][201][202][203]…”

Section: (Nano)catalyst Additionmentioning

confidence: 99%

See 1 more Smart Citation

Recent Development in Nanoconfined Hydrides for Energy Storage

Comănescu

2022

IJMS

View full text Add to dashboard Cite

Hydrogen is the ultimate vector for a carbon-free, sustainable green-energy. While being the most promising candidate to serve this purpose, hydrogen inherits a series of characteristics making it particularly difficult to handle, store, transport and use in a safe manner. The researchers’ attention has thus shifted to storing hydrogen in its more manageable forms: the light metal hydrides and related derivatives (ammonia-borane, tetrahydridoborates/borohydrides, tetrahydridoaluminates/alanates or reactive hydride composites). Even then, the thermodynamic and kinetic behavior faces either too high energy barriers or sluggish kinetics (or both), and an efficient tool to overcome these issues is through nanoconfinement. Nanoconfined energy storage materials are the current state-of-the-art approach regarding hydrogen storage field, and the current review aims to summarize the most recent progress in this intriguing field. The latest reviews concerning H2 production and storage are discussed, and the shift from bulk to nanomaterials is described in the context of physical and chemical aspects of nanoconfinement effects in the obtained nanocomposites. The types of hosts used for hydrogen materials are divided in classes of substances, the mean of hydride inclusion in said hosts and the classes of hydrogen storage materials are presented with their most recent trends and future prospects.

show abstract

“…A wide range of host materials for NaAlH 4 have been previously demonstrated, including mesoporous carbon, [13][14][15] carbon aerogel, 16 carbon nanober, 17,18 carbon nanotube, 19 mesoporous silica, 20 metal-organic framework, 21,22 and porous aluminium scaffold. 23 Most of the prior works have focused on enhancing reaction kinetics and reversibility, and to our knowledge there have been no studies on increasing air stability of the nano-conned NaAlH 4 .…”

Section: Introductionmentioning

confidence: 99%