Alanates, a Comprehensive Review

Suárez‐Alcántara, K.; Tena-García, J.R.; Guerrero-Ortiz, Ricardo

doi:10.3390/ma12172724

Cited by 32 publications

(33 citation statements)

References 314 publications

(522 reference statements)

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“…Vanadium (V)-based alloys − exhibited a higher reversible hydrogen capacity of about 2.5 wt %, but their large-scale application was limited by the high price of vanadium. Lightweight coordination hydride materials (such as magnesium hydride, − boron hydride, , amino hydride, , and aluminum hydride − ) have theoretical hydrogen storage capacities exceeding 5 wt %. However, there are still many drawbacks with these materials, such as a high dehydrogenation temperature, sluggish kinetics, and poor reversible hydrogen storage performance at ambient temperatures. − …”

Section: Introductionmentioning

confidence: 99%

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

Zhou

et al. 2022

Energy Fuels

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Hydrogen storage is one of the key steps that restricts the large-scale application of hydrogen energy and fuel cells. In this work, we developed an efficient H2 storage material by Ce doping in the TiZrCrMn alloy and systemically studied the effect of Ce on the microstructure, activation, and hydrogen storage properties. The results indicated that Ce addition in the Ti0.8Zr0.2Cr0.75Mn1.25 alloy did not change the major phase structure of Laves C14 but slightly increased the lattice constants and resulted in the formation of a CeO2 phase. It is interesting to find that Ce inhibited the enrichment of the Ti phase, inducing a homogeneous elemental distribution throughout the alloy. Hydrogenation and dehydrogenation tests indicated that the Ce-added alloy exhibited H2 absorption and effective desorption capacities of up to 1.98 and 1.79 wt %, respectively, higher than those of TiZrCrMn alloys reported in the literature. Ce also improved the activation of the alloy at room temperature and enhanced the cyclic performance during the hydrogenation and dehydrogenation. The activation energy, enthalpy change, and entropy change of the alloys upon hydrogenation and dehydrogenation were calculated and a small change was observed after Ce addition.

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Section: Introductionmentioning

confidence: 99%

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

Zhou

et al. 2022

Energy Fuels

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“…As mentioned above, AlH 3 has poor stability and is easy to decompose to produce hydrogen when the temperature rises, which makes the storage and transportation of AlH 3 to have high risks. The structure, thermodynamics, kinetics, and synthesis methods of AlH 3 have been comprehensively and summarized in detail in the latest several reviews about AlH 3 [ 33 , 56 , 67 ]. However, the content of improving the stability of AlH 3 is not much involved.…”

Section: Stabilitymentioning

confidence: 99%

Synthesis and Stability of Hydrogen Storage Material Aluminum Hydride

Zhao

et al. 2021

Materials

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Aluminum hydride (AlH3) is a binary metal hydride with a mass hydrogen density of more than 10% and bulk hydrogen density of 148 kg H2/m3. Pure aluminum hydride can easily release hydrogen when heated. Due to the high hydrogen density and low decomposition temperature, aluminum hydride has become one of the most promising hydrogen storage media for wide applications, including fuel cell, reducing agents, and rocket fuel additive. Compared with aluminum powder, AlH3 has a higher energy density, which can significantly reduce the ignition temperature and produce H2 fuel in the combustion process, thus reducing the relative mass of combustion products. In this paper, the research progress about the structure, synthesis, and stability of aluminum hydride in recent decades is reviewed. We also put forward the challenges for application of AlH3 and outlook the possible opportunity for AlH3 in the future.

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“…Until now (2021), no homoleptic Nb-borohydrides have been reported. Compared to Nb-alanates, for which a relatively wide variety of materials have been reported [ 104 ] (and references within), the lack of homoleptic Nb-borohydrides is exceptional. Alanates of the same metal are in general less stable than the corresponding borohydrides.…”

Section: Transition Metal Borohydridesmentioning

confidence: 99%

Metal Borohydrides beyond Groups I and II: A Review

Suárez‐Alcántara

García

2021

Materials

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This review consists of a compilation of synthesis methods and several properties of borohydrides beyond Groups I and II, i.e., transition metals, main group, lanthanides, and actinides. The reported properties include crystal structure, decomposition temperature, ionic conductivity, photoluminescence, etc., when available. The compiled properties reflect the rich chemistry and possible borohydrides’ application in areas such as hydrogen storage, electronic devices that require an ionic conductor, catalysis, or photoluminescence. At the end of the review, two short but essential sections are included: a compilation of the decomposition temperature of all reported borohydrides versus the Pauling electronegativity of the cations, and a brief discussion of the possible reactions occurring during diborane emission, including some strategies to reduce this inconvenience, particularly for hydrogen storage purposes.

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Alanates, a Comprehensive Review

Cited by 32 publications

References 314 publications

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

Synthesis and Stability of Hydrogen Storage Material Aluminum Hydride

Metal Borohydrides beyond Groups I and II: A Review

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