Enhanced hydrogen storage properties of Li-RHC system with in-house synthesized AlTi₃ nanoparticles

Le, Thi-Thu; Pistidda, Claudio; Puszkiel, Julián; Castro Riglos, María Victoria; Dreistadt, David Michael; Klassen, Thomas; Dornheim, Martin

doi:10.3390/en14237853

Enhanced hydrogen storage properties of Li-RHC system with in-house synthesized AlTi₃ nanoparticles

Publication date

2021-11-23

Document type

Forschungsartikel

Author

Le, Thi-Thu

Pistidda, Claudio

Puszkiel, Julián

Castro Riglos, María Victoria

Dreistadt, David Michael

Klassen, Thomas

Dornheim, Martin

Organisational unit

Werkstoffkunde

Angewandte Werkstofftechnik

DOI

10.3390/en14237853

URI

https://openhsu.ub.hsu-hh.de/handle/10.24405/21575

Publisher

MDPI

Series or journal

Energies

ISSN

1996-1073

Periodical volume

14

Periodical issue

23

Article ID

7853

Part of the university bibliography

✅

Language

English

Keyword

In-house-synthesized additive

AlTi3 nanoparticles

Kinetics

Reaction mechanism

Reactive hydride composite

Abstract

In recent years, the use of selected additives for improving the kinetic behavior of the system 2LiH + MgB₂ (Li-RHC) has been investigated. As a result, it has been reported that some additives (e.g., 3TiCl₃·AlCl₃), by reacting with the Li-RHC components, form nanostructured phases (e.g., AlTi₃) possessing peculiar microstructural properties capable of enhancing the system’s kinetic behavior. The effect of in-house-produced AlTi₃ nanoparticles on the hydrogenation/dehydrogenation kinetics of the 2LiH + MgB₂ (Li-RHC) system is explored in this work, with the aim of reaching high hydrogen storage performance. Experimental results show that the AlTi₃ nanoparticles significantly improve the reaction rate of the Li-RHC system, mainly for the dehydrogenation process. The observed improvement is most likely due to the similar structural properties between AlTi₃ and MgB₂ phases which provide an energetically favored path for the nucleation of MgB₂. In comparison with the pristine material, the Li-RHC doped with AlTi₃ nanoparticles has about a nine times faster dehydrogenation rate. The results obtained from the kinetic modeling indicate a change in the Li-RHC hydrogenation reaction mechanism in the presence of AlTi₃ nanoparticles.

Description

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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