Ionic conductivity in complex hydrides for energy storage applications: A comprehensive review

Le, Thi-Thu; Abbas, Mohamed; Dreistadt, David Michael; Klassen, Thomas; Pistidda, Claudio

doi:10.1016/j.cej.2023.145315

Cited by 10 publications

(9 citation statements)

References 218 publications

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“…26 In general, solid solutions are not only important for hydrogen storage but also for the ionic conduction of complex metal hydrides. The formation of a homogeneous solid solution by ion mixing is one of the most common ways to improve the ionic conductivity of a material, 27 most likely due to the structural perturbations or modifications that facilitate the migration of ions, as observed in the LiBH 4 −LiX (X = Cl − , Br − , and I − ) 28,29 and NaBH 4 − NaI. 30 Our previous studies reported the formation of mixed amide-hydride solid solutions, such as K(NH 2 ) x H 1−x , Rb-(NH 2 ) x H 1−x , and Cs(NH 2 ) x H 1−x , via the exchange of anionic species (NH 2 − in amides and H − in hydrides) for the KNH 2 − KH, 31 RbNH 2 −RbH, 16 and CsNH 2 −CsH 32 28,29 and NaBH 4 −NaI.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mixed Metal Amide-Hydride Solid Solutions for Potential Energy Storage Applications

Le,

Bordignon,

Chierotti

et al. 2024

Inorg. Chem.

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Mixed solid solutions have played an important role in improving the kinetics and performance of hydrogen storage materials, as reported for the Li−Mg−N−H, K−Mg−N−H, and Rb−Mg−N−H systems. Besides, the formation of a homogeneous solid solution, mostly due to partial ionic substitution, is known to be an effective approach to improve the ionic conductivity of a material, which is an important property in electrochemical applications. We have reported a series of solid solutions based on mixed amide-hydride materials of the Group 1 elements, e.g., K(NH 2 ) x H 1−x , Rb(NH 2 ) x H 1−x , and Cs(NH 2 ) x H 1−x , via the exchange of NH 2 − /H − anions with the change of the lattice cell of the solid solution. Extending the research in this direction, we study the M− N−H solid solution in the MNH 2 −MH systems (M = K, Rb, Cs, and their combinations), i.e., KNH 2 −RbH, RbNH 2 −KH, RbNH 2 −CsH, and CsNH 2 −RbH via ex situ/in situ XRD, IR, and 1 H 2D solid-state NMR. The results obtained confirm the formation of mixed metal amide-hydride solid solutions associated with an exchange between both anionic (NH 2− and H − ) and cationic species (K + , Rb + , and Cs + ). With this study, we aim to create an accessible library of M−N−H solid solutions for further studies as additives for hydrogen storage materials or ionic conductors.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mixed Metal Amide-Hydride Solid Solutions for Potential Energy Storage Applications

Le,

Bordignon,

Chierotti

et al. 2024

Inorg. Chem.

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“…Various strategies have been proposed to improve the ionic conduction at room temperature, for instance, by partial ionic substitution or by the use of other borohydride-like anions. 4,5,7,8 A different strategy to increase the room temperature ion conductivity of complex metal hydrides involves the formation of nanocomposites, specifically bringing the hydride in contact with an oxide, such as silica. 9−12 This approach has been shown to increase the conductivity of LiBH 4 /SiO 2 by at least 3 orders of magnitude at ambient temperatures.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Unfortunately, the ionic conductivity of bulk LiBH 4 is poor below the structural phase transition from the orthorhombic to hexagonal phase (around 110 °C). Various strategies have been proposed to improve the ionic conduction at room temperature, for instance, by partial ionic substitution or by the use of other borohydride-like anions. ,,, …”

Section: Introductionmentioning

confidence: 99%

“…One class of electrolytes under investigation for use in all-solid-state batteries comprises the complex metal hydrides. − Complex metal hydrides show good compatibility with high energy density anodes, including metallic lithium. , In addition, they display good electrochemical stability, have a negligible electronic conduction, and are lightweight. , One complex metal hydride that has received considerable interest is lithium borohydride. At elevated temperatures, the lithium ion of LiBH 4 is highly mobile, resulting in a high ionic conductivity .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Preparation Methods on the Interface of LiBH₄/SiO₂ Nanocomposite Solid Electrolytes

Lambregts,

de Kort,

Winkelmann

et al. 2024

J. Phys. Chem. C

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Nanocomposites of complex metal hydrides and oxides are promising solid state electrolytes. The interaction of the metal hydride with the oxide results in a highly conducting interface layer. Up until now it has been assumed that the interface chemistry is independent of the nanoconfinement method. Using 29 Si solid state NMR and LiBH 4 /SiO 2 as a model system, we show that the silica surface chemistry differs for nanocomposites prepared via melt infiltration or ball milling. After melt infiltration, a Si•••H•••BH 3 complex is present on the interface, together with silanol and siloxane groups. However, after ball milling, the silica surface consists of Si− H sites, and silanol and siloxane groups. We propose that this change is related to a redistribution of silanol groups on the silica surface during ball milling, where free silanol groups are converted to mutually hydrogen-bonded silanol groups. The results presented here help to explain the difference in ionic conductivity between nanocomposites prepared via ball milling and melt infiltration.

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Fast and Efficient Fabrication of Functional Electronic Devices through Grayscale Digital Light Processing 3D Printing

Gholami,

Yue,

et al. 2024

Advanced Materials

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Fabricating polymeric composites with desirable characteristics for electronic applications is a complex and costly process. Digital light processing (DLP) 3D printing emerges as a promising technique for manufacturing intricate structures. In this study, polymeric samples are fabricated with a conductivity difference exceeding three orders of magnitude in various portions of a part by employing grayscale DLP (g‐DLP) single‐vat single‐cure 3D printing deliberate resin design. This is realized through the manipulation of light intensity during the curing process. Specifically, the rational resin design with added lithium ions results in the polymer cured under the maximum UV‐light intensity exhibiting higher electrical resistance. Conversely, sections that are only partially cured retains uncured monomers, serving as a medium that facilitates ion mobility, consequently leading to higher conductivity. The versatility of g‐DLP allows precise control of light intensity in different regions during the printing process. This characteristic opens up possibilities for applications, notably the low‐cost, facile, and rapid production of complex electrical circuits and sensors. The utilization of this technique makes it feasible to fabricate materials with tailored conductivity and functionality, providing an innovative pathway to advance the accelerated and facile creation of sophisticated electronic devices.

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Ionic conductivity in complex hydrides for energy storage applications: A comprehensive review

Cited by 10 publications

References 218 publications

Mixed Metal Amide-Hydride Solid Solutions for Potential Energy Storage Applications

Mixed Metal Amide-Hydride Solid Solutions for Potential Energy Storage Applications

Effect of Preparation Methods on the Interface of LiBH₄/SiO₂ Nanocomposite Solid Electrolytes

Fast and Efficient Fabrication of Functional Electronic Devices through Grayscale Digital Light Processing 3D Printing

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Ionic conductivity in complex hydrides for energy storage applications: A comprehensive review

Cited by 10 publications

References 218 publications

Mixed Metal Amide-Hydride Solid Solutions for Potential Energy Storage Applications

Mixed Metal Amide-Hydride Solid Solutions for Potential Energy Storage Applications

Effect of Preparation Methods on the Interface of LiBH4/SiO2 Nanocomposite Solid Electrolytes

Fast and Efficient Fabrication of Functional Electronic Devices through Grayscale Digital Light Processing 3D Printing

Contact Info

Product

Resources

About

Effect of Preparation Methods on the Interface of LiBH₄/SiO₂ Nanocomposite Solid Electrolytes