Nanomaterials for Solid State Hydrogen Storage

Varin, R.A.; Czujko, Tomasz; Wronski, Zbigniew S.

doi:10.1007/978-0-387-77712-2

Cited by 262 publications

(465 citation statements)

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“…(6) on the basis of available C p,m data for this phase [19], of selected values for the enthalpy and entropy of transition and of the thermodynamic function of the orthorhombic phase, as described above in Eqs. (8) and (9).…”

Section: Hexagonal Phasementioning

confidence: 99%

“…Moreover, a destablization of LiBH 4 via reaction with a second hydride system has been suggested, in order to reduce the Gibbs Free Energy (GFE) difference between hydrogenated and de-hydrogenated species [2,8]. As an example, LiBH 4 -MgH 2 reactive hydride composite has been deeply studied [5,9]. Even if the mechanisms of dehydrogenation reactions have not been clarified yet, the addition of a small amount of a promoter (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A thermodynamic assessment of LiBH4

Kharbachi

Pinatel

Nuta

et al. 2012

Calphad

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a b s t r a c t Thermodynamic data of the LiBH 4 compound are reviewed and critically assessed. On the basis of literature data of heat capacity, heat of formation, temperature and enthalpy of phase transitions, a CALPHAD optimized Gibbs energy function is derived for the condensed phases i.e. orthorhombic and hexagonal solid phases and the liquid phase. Considering hydrogen as an ideal gas phase, the thermodynamics of decomposition reactions of LiBH 4 is calculated, showing good agreement with existing experimental data.

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Section: Hexagonal Phasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A thermodynamic assessment of LiBH4

Kharbachi

Pinatel

Nuta

et al. 2012

Calphad

View full text Add to dashboard Cite

show abstract

“…Mechanochemical treatments are complex processes that generally result in a number of different positive effects: (i) the particle size reduction; (ii) the breaking of the oxide layers; (iii) the induction of a high level of elastic shears and other stresses; and eventually, (iv) the formation of a stacking fault disorder; and (v) the increase of the atomic disorder [21]. For these reasons, as it is generally applied to activate hydrogen desorption, high energy ball milling was used to pretreat commercial hydrides.…”

Section: Methodological Approachmentioning

confidence: 99%

Hydrides as High Capacity Anodes in Lithium Cells: An Italian “Futuro in Ricerca di Base FIRB-2010” Project

et al. 2017

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Automotive and stationary energy storage are among the most recently-proposed and still unfulfilled applications for lithium ion devices. Higher energy, power and superior safety standards, well beyond the present state of the art, are actually required to extend the Li-ion battery market to these challenging fields, but such a goal can only be achieved by the development of new materials with improved performances. Focusing on the negative electrode materials, alloying and conversion chemistries have been widely explored in the last decade to circumvent the main weakness of the intercalation processes: the limitation in capacity to one or at most two lithium atoms per host formula unit. Among all of the many proposed conversion chemistries, hydrides have been proposed and investigated since 2008. In lithium cells, these materials undergo a conversion reaction that gives metallic nanoparticles surrounded by an amorphous matrix of LiH. Among all of the reported conversion materials, hydrides have outstanding theoretical properties and have been only marginally explored, thus making this class of materials an interesting playground for both fundamental and applied research. In this review, we illustrate the most relevant results achieved in the frame of the Italian National Research Project FIRB 2010 Futuro in Ricerca "Hydrides as high capacity anodes in lithium cells" and possible future perspectives of research for this class of materials in electrochemical energy storage devices.

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“…Possible ways to improve the hydrogen absorption-desorption kinetics are alloying Mg to modify the crystal structure of the hydrides by addition of transition metals, metal oxides or rare earths [7][8][9][10][11][12][13][14][15] , reducing the grain size by alloying elements, mechanical deformation or rapid solidification. In recent years the absorption-desorption of hydrogen in Mg alloys produced by unconventional methods have been investigated [16][17][18] . It was observed that the reaction kinetics are improved when the Mg based materials have nanometric structures 19,20 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Alloying Elements in Melt Spun Mg-alloys for Hydrogen Storage

et al. 2016

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In this paper we report the effect of alloying elements on hydrogen storage properties of meltspun Mg-based alloys. The base alloys Mg 90 Si 10 , Mg 90 Cu 10 , Mg 65 Cu 35 (at%) were studied. We also investigated the effect of rare earths (using MM: mischmetal) alloys showed an amorphous and partially amorphous structure respectively. At 350˚C all the alloys had a crystalline structure during the hydrogen absorption-desorption tests. It was observed that Si and Cu in the binaries alloys hindered completely the activation of the hydrogen absorption. The partial substitution of Cu by MM or Al allowed activation. The combined substitution of Cu by MM and Al showed the best results with the fastest absorption and desorption kinetics, which suggests that this combination can be used for new Mg-alloys to improve hydrogen storage properties.

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Nanomaterials for Solid State Hydrogen Storage

Cited by 262 publications

References 0 publications

A thermodynamic assessment of LiBH4

A thermodynamic assessment of LiBH4

Hydrides as High Capacity Anodes in Lithium Cells: An Italian “Futuro in Ricerca di Base FIRB-2010” Project

Effect of Alloying Elements in Melt Spun Mg-alloys for Hydrogen Storage

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