Lithium amidoborane hydrazinates: synthesis, structure and hydrogen storage properties

He, Teng; Wu, Hui; Wu, Guotao; Zhao, Li; Zhou, Wei; Ju, Xiaohua; Xie, Dong; Chen, Ping

doi:10.1039/c5ta00985e

Cited by 10 publications

(8 citation statements)

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“…The first amidoborane ammoniate was synthesized through ball milling Ca(NH 2 ) 2 with 2 equiv of AB (R17), forming calcium amidoborane diammoniate (CaAB·2NH 3 ). Starting from there, a series of amidoborane ammoniates with different metal cations and different amount of ammonia ligand were synthesized and investigated for hydrogen storage. , Similar to ammonia, hydrazine with a lone pair on N can complex with a metal cation of MAB to form amidoborane hydrazinates; , we therefore synthesized lithium and calcium amidoborane hydrazinates via ball milling hydrazine and corresponding amidoboranes (R18). …”

Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

“…(b) Crystal structures of LiAB·N 2 H 4 , N - blue, B - green, H - gray, Li - yellow. (c, d) Volumetric release measurements of CaAB·2NH 3 and LiAB·nN 2 H 4 as compared with pristine CaAB and LiAB in close system, respectively. Reproduced with permission from refs and .…”

Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

“…(c, d) Volumetric release measurements of CaAB·2NH 3 and LiAB·nN 2 H 4 as compared with pristine CaAB and LiAB in close system, respectively. Reproduced with permission from refs and . Copyright 2009 American Chemical Society and 2015 Royal Society of Chemistry.…”

Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

“…Ammonia and hydrazine are high hydrogen content chemicals (17.7 and 12.5 wt %, respectively), and the H δ+ in NH 3 or N 2 H 4 can compensate the unbalance of H δ+ and H δ− in amidoborane. However, the decomposition behavior of amidoborane ammoniates or hydrazinates depends strongly on reaction conditions. , In a flow reactor purged by an inert gas, the vapor pressure of NH 3 or NH 2 NH 2 is close to zero, resulting in a loss of ligands during a heating treatment. In contrast, if the amidoborane ammoniates or hydrazinates are kept within a closed vessel, most of the ligand molecules would remain in the bulk phase and have a high chance to react with [NH 2 BH 3 ] − to release H 2 (Figure c,d).…”

Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

“…In contrast, if the amidoborane ammoniates or hydrazinates are kept within a closed vessel, most of the ligand molecules would remain in the bulk phase and have a high chance to react with [NH 2 BH 3 ] − to release H 2 (Figure c,d). It is worth noting that complexes with cations of a stronger coordination ability to NH 3 or N 2 H 4 may preferentially undergo dehydrogenation. , …”

Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

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The Roles of Alkali/Alkaline Earth Metals in the Materials Design and Development for Hydrogen Storage

Cao

Chen

2021

Acc. Mater. Res.

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Metrics & MoreArticle Recommendations * sı Supporting Information CONSPECTUS: Hydrogen storage for onboard applications has been recognized as a grand challenge for the large-scale implementation of hydrogen fuel cell vehicles. Tremendous research efforts have thus been devoted to the design and development of hydrides of lightweight elements (HLEs). A prominent feature of these materials is the indispensable ingredient of alkali/alkaline earth cations. Alkali alkaline earth metals (AMs) are highly reactive and have a rich coordination chemistry. As a matter of fact, an AM cation can form a complete range of compounds with hydrogenous anions, such as

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Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

Section: Metal Amidoboranes and Derivativesmentioning

confidence: 99%

See 3 more Smart Citations

The Roles of Alkali/Alkaline Earth Metals in the Materials Design and Development for Hydrogen Storage

Cao

Chen

2021

Acc. Mater. Res.

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Complex Hydrides for Energy Storage, Conversion, and Utilization

2019

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functionalities and exhibit great potentials for the applications in the energy transfer chain (Figure 1).In chemistry, a hydride is a compound having negatively charged hydrogen anion. [2] Nowadays, however, hydrogenous compounds having hydrogen bonded to metals or nonmetal in ionic, metallic or covalent manner are collectively referred as hydrides. [3] Complex hydride is such a class of compound having a general formula of M(XH n ) m , where M is usually a metal cation and X is a metal or nonmetal element which sets up covalent or ionocovalent bonding with H. [4] The M[XH n ] m is H-rich and can decompose selectively to H 2 allowing complex hydrides of light-weight elements potential hydrogen storage media. As a matter of fact, since the pioneering work of Ti-catalyzed NaAlH 4 in 1997, [5] extensive investigations on hydrogen storage over alanates, [6] amide-hydride composites, [7] borohydrides, [8] amidoboranes [9] as well as metallorganic hydrides [10] were carried out and tremendous progress has been made (Figure 2). [1,4a] The break and setup of XH bonding would be endergonic and exergonic, respectively. The energy input and output in hydrogen desorption and reabsorption over a complex hydride depends strongly on its thermodynamic stability, which also offers an opportunity of using complex hydrides as thermal energy storage materials to cope up with the intermittent, fluctuating and unstable supply of renewable energies. Owning to their exclusive advantages of diversity, high energy densities and tunability, complex hydrides have been actively pursued for this application since year 2000. [11] Solid electrolytes with fast conduction of Li, Na, or Mg ions are highly demanded for all-solid-state batteries with high energy density and safety. Coincidentally, complex hydrides are composed of those cations and a relatively large sized [XH n ] anion. The coordination flexibility of the large anion with alkali or alkaline earth cation would create some favorable structural features, such as defects and/or low-barrier diffusion channels, to facilitate cation migration within the lattice of complex hydrides. [12] Starting from the finding of high Li-ion conduction in the high-temperature-phase LiBH 4 , [13] a variety of complex hydrides has been developed, some of which show superior ion conductivity to their nonhydride peers. [14] Hydrogen storage over complex hydride would undergo dihydrogen dissociation into surface H atoms followed by H Functional materials are the key enabling factor in the development of clean energy technologies. Materials of particular interest, which are reviewed herein, are a class of hydrogenous compound having the general formula of M(XH n ) m , where M is usually a metal cation and X can be Al, B, C, N, O, transition metal (TM), or a mixture of them, which sets up an iono-covalent or covalent bonding with H. M(XH n ) m is generally termed as a complex hydride by the hydrogen storage community. The rich chemistry between H and B/C/N/O/Al/TM allows complex hydrides of diverse compo...

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Neutron scattering studies of materials for hydrogen storage

Klein¹,

Evans²,

Trump³

et al. 2023

Comprehensive Inorganic Chemistry III

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Lithium amidoborane hydrazinates: synthesis, structure and hydrogen storage properties

Abstract: Lithium amidoborane hydrazinate, the first amidoborane hydrazinate as a potential hydrogen storage material, was successfully synthesized and investigated.

Cited by 10 publications

References 57 publications

The Roles of Alkali/Alkaline Earth Metals in the Materials Design and Development for Hydrogen Storage

The Roles of Alkali/Alkaline Earth Metals in the Materials Design and Development for Hydrogen Storage

Complex Hydrides for Energy Storage, Conversion, and Utilization

Neutron scattering studies of materials for hydrogen storage

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