Structural stability of metal hydrides, alanates and borohydrides of alkali and alkali- earth elements: A review

George, Lyci; Saxena, Surendra K.

doi:10.1016/j.ijhydene.2010.03.078

Cited by 191 publications

(106 citation statements)

References 171 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The conductivities observed are similar to those observed earlier for LiBH 4 and other Li + ion conductors [9,10] and somewhat higher than those found for similar Na + ion conductors [11,12]. Our results also agree well with earlier results at pressures of 2 GPa and above [13], except that we find phase III to have the highest activation energy of the phases studied instead of the lowest, as found by Takamura et al [13].…”

Section: Discussionsupporting

confidence: 92%

“…The material studied was taken from the same batch of 99.9% Sigma-Aldrich LiBH 4 as used in earlier studies [5,6,8]. The material had been stored in a closed container in a dry, Argon-filled glove-box between the studies.…”

Section: Methodsmentioning

confidence: 99%

“…This has also led to a strong interest in their high pressure structures and properties, primarily to investigate the possibilities to create structures with an increased volumetric hydrogen density. The high pressure and high temperature phase diagrams of these materials have thus been a hot research topic over the last few years [2][3][4]. As an example, LiBH 4 contains 18.4 weight percent hydrogen and its structural phase diagram has recently been investigated in detail [2][3][4][5][6][7][8], revealing, for example, an interesting structural metastability [6,8].…”

Section: Introductionmentioning

confidence: 99%

“…Hydrides usually have a wide band gap which rules out electronic conduction, and the very high observed conductivities of order 10 -2 S cm -1 are thus entirely due to ionic transport. The conductivity and other properties of LiBH 4 have already been extensively investigated by many methods [10], and the conductivity was also recently investigated under high pressures between 2 and 6 GPa by Takamura et al [13] in three of the four solid phases existing below 6 GPa and 500 K [2][3][4]7].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ionic conductivity in three crystalline phases of LiBH₄under pressure

Sundqvist¹,

Yao²,

Andersson³

2013

High Pressure Research

View full text Add to dashboard Cite

The AC electrical conductivity of LiBH 4 was investigated below 2 GPa between 1 Hz and 1.6 MHz. The high temperature phase has an ionic conductivity of up to 0.01 S cm -1 while the low temperature phases have conductivities two orders of magnitude lower. All phases show an Arrhenius behaviour with activation energies E a between 0.5 and 0.7 eV, in good agreement with earlier data except for phase III, which is found to have the highest activation energy of the phases studied. The high temperature phase has a minimum in E a near 1 GPa, close to the triple point, correlated with a sudden change in activation volume. These features may indicate an isostructural phase transition. The conductivities of the ambient temperature phases increase temporarily by an order of magnitude after transitions between these phases, probably due to new diffusion channels via structural defects. The phase diagram agrees well with earlier results.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ionic conductivity in three crystalline phases of LiBH₄under pressure

Sundqvist¹,

Yao²,

Andersson³

2013

High Pressure Research

View full text Add to dashboard Cite

show abstract

“…In this review, we focus on the recent progress in the dehydrogenation and rehydrogenation reactions of M(BH 4 ) n at controlled temperature and hydrogen pressure. Some several excellent reviews on M(BH 4 ) n are also available [2,[12][13][14][15][16][17][18].…”

Section: Open Accessmentioning

confidence: 99%

Recent Progress in Metal Borohydrides for Hydrogen Storage

et al. 2011

View full text Add to dashboard Cite

Abstract:The prerequisite for widespread use of hydrogen as an energy carrier is the development of new materials that can safely store it at high gravimetric and volumetric densities. Metal borohydrides M(BH 4 ) n (n is the valence of metal M), in particular, have high hydrogen density, and are therefore regarded as one such potential hydrogen storage material. For fuel cell vehicles, the goal for on-board storage systems is to achieve reversible store at high density but moderate temperature and hydrogen pressure. To this end, a large amount of effort has been devoted to improvements in their thermodynamic and kinetic aspects. This review provides an overview of recent research activity on various M(BH 4 ) n , with a focus on the fundamental dehydrogenation and rehydrogenation properties and on providing guidance for material design in terms of tailoring thermodynamics and promoting kinetics for hydrogen storage.

show abstract

Materials for Hydrogen Storage

Harrison

Welchman

Chabal³

et al. 2015

Handbook of Clean Energy Systems

View full text Add to dashboard Cite

In this article, we discuss possible options for hydrogen‐storage systems. We begin by pointing out the tremendous advantages of hydrogen as an alternative fuel, but we also discuss the problems associated with it. We then move to the general constraints for hydrogen storage in automotive applications, followed by the targets that the US Department of Energy has established for the performance of hydrogen‐storage systems in order to be on track for a future hydrogen economy and to be competitive with the current technology of fossil fuel‐based combustion engines. We then move to the central topic of this book article—the three main categories of hydrogen‐storage systems, distinguished by their mechanism of storing hydrogen: mechanical storage, adsorption‐based storage, and chemical storage, with an emphasis on the latter two. Within these categories, we break the materials further into subgroups, pointing out strengths and weaknesses of each in reference to the US Department of Energy targets. We finally conclude with an outlook into the near‐term future.

show abstract

Structural stability of metal hydrides, alanates and borohydrides of alkali and alkali- earth elements: A review

Cited by 191 publications

References 171 publications

Ionic conductivity in three crystalline phases of LiBH₄under pressure

Ionic conductivity in three crystalline phases of LiBH₄under pressure

Recent Progress in Metal Borohydrides for Hydrogen Storage

Materials for Hydrogen Storage

Contact Info

Product

Resources

About

Structural stability of metal hydrides, alanates and borohydrides of alkali and alkali- earth elements: A review

Cited by 191 publications

References 171 publications

Ionic conductivity in three crystalline phases of LiBH4under pressure

Ionic conductivity in three crystalline phases of LiBH4under pressure

Recent Progress in Metal Borohydrides for Hydrogen Storage

Materials for Hydrogen Storage

Contact Info

Product

Resources

About

Ionic conductivity in three crystalline phases of LiBH₄under pressure

Ionic conductivity in three crystalline phases of LiBH₄under pressure