Advances in Solid-State Hydrogen and Energy Storage

A special issue of Hydrogen (ISSN 2673-4141).

Deadline for manuscript submissions: 31 March 2026 | Viewed by 1441

Special Issue Editor

Helmholtz-Zentrum Hereon GmbH, Institute of Hydrogen Technology, Max-Planck-Straße 1, 21502 Geesthacht, Germany
Interests: hydrogen and energy storage; hydrogen storage materials; metal hydrides; hydride solid electrolytes; materials characterizations; water splitting
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Special Issue Information

Dear Colleagues,

The transition to sustainable and low-carbon energy infrastructures requires the development of advanced energy storage technologies capable of overcoming intermittency and improving system efficiency. Solid-state hydrogen storage has attracted considerable attention as a viable solution, offering improved safety, volumetric efficiency and operational reliability compared to conventional storage methods. Recent advances in materials science—including metal hydrides, complex hydrides, porous crystalline frameworks such as metal–organic frameworks (MOFs) and covalent organic frameworks (COFs), and nanostructured composites—have significantly improved hydrogen uptake capacities, sorption kinetics, and cycling durability.

In parallel, solid-state electrochemical energy storage technologies, in particular solid-state batteries and hybrid material systems, are demonstrating remarkable advances in energy density, safety, and long-term performance. The convergence of these research areas offers a promising path towards the development of integrated energy storage platforms capable of supporting renewable energy systems, hydrogen fuel cell applications, and future smart grids.

This Special Issue aims to present state-of-the-art research and comprehensive reviews on the design, synthesis, and characterization of solid-state hydrogen storage materials, as well as recent advances in solid-state electrochemical energy storage systems. Contributions employing experimental studies, computational modelling, and system-level analyses are welcome, with the overall goal of deepening fundamental insights and practical implementation of innovative energy storage technologies.

Dr. Thi Thu Le
Guest Editor

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Keywords

  • solid-state hydrogen storage
  • porous framework materials
  • solid-state electrochemical storage
  • integrated energy system
  • data-driven modelling and computation

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Published Papers (1 paper)

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Research

19 pages, 3974 KB  
Article
First-Principles Investigation of Structural, Electronic, Thermoelectric, and Hydrogen Storage Properties of MgXH3 (X = Cr, Mn, Fe, Co, Ni, Cu) Perovskite Hydrides
by Ayoub Koufi, Younes Ziat and Hamza Belkhanchi
Hydrogen 2025, 6(4), 106; https://doi.org/10.3390/hydrogen6040106 - 11 Nov 2025
Viewed by 767
Abstract
This paper is based on the BoltzTrap package implemented in the Wien2k code to theoretically analyze and predict the structural, electronic, thermoelectric, and hydrogen storage properties of MgXH3 hydride perovskites (X = Cr, Mn, Fe, Co, Ni, and Cu). The [...] Read more.
This paper is based on the BoltzTrap package implemented in the Wien2k code to theoretically analyze and predict the structural, electronic, thermoelectric, and hydrogen storage properties of MgXH3 hydride perovskites (X = Cr, Mn, Fe, Co, Ni, and Cu). The study explores the dual functional potential of these compounds, highlighting how their hydrogen storage capability relates to their temperature-dependent thermoelectric performance. Analysis of band structures and densities of electronic states (DOS) reveals that all the compounds studied exhibit metallic behavior, characterized by an overlap between the valence band and the conduction band, indicating a zero electronic gap. Thermal properties show great variability depending on the transition metal involved. In particular, electrical conductivity and thermal conductivity evolve differently with temperature, directly influencing the figure of merit (Zt) of thermoelectric materials. The results suggest that although most MgXH3 compounds are not promising candidates for thermoelectric applications due to their high thermal conductivity and low density of states near the EF, MgNiH3 and MgCuH3 stand out with attractive thermoelectric potential. These properties make them attractive for energy conversion, waste heat recovery and solid-state cooling applications. This theoretical study highlights the potential of magnesium-based perovskite hydrides in energy conversion technologies, including thermoelectricity and hydrogen storage. Full article
(This article belongs to the Special Issue Advances in Solid-State Hydrogen and Energy Storage)
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