Metal (boro-) hydrides for high energy density storage and relevant emerging technologies

Abstract

The current energy transition imposes a rapid implementation of energy storage systems with high energy density and eminent regeneration and cycling efficiency. Metal hydrides are potential candidates for generalized energy storage, when coupled with fuel cell units and/or batteries. An overview of ongoing research is reported and discussed in this review work on the light of application as hydrogen and heat storage matrices, as well as thin films for hydrogen optical sensors. These include a selection of single-metal hydrides, Ti-V(Fe) based intermetallics, multi-principal element alloys (high-entropy alloys), and a series of novel synthetically accessible metal borohydrides. Metal hydride materials can be as well of important usefulness for MH-based electrodes with high capacity (e.g. MgH2 ~ 2000 mAh g-1) and solid-state electrolytes displaying high ionic conductivity suitable, respectively, for Li-ion and Li/Mg battery technologies. To boost further research and development directions some characterization techniques dedicated to the study of M-H interactions, their equilibrium reactions, and additional quantification of hydrogen concentration in thin film and bulk hydrides are presented at the end of this manuscript.

References in corpus (4)

• Materials for hydrogen-based energy storage: Past, recent progress and future outlook
• Exploits, advances and challenges benefiting beyond Li-ion battery technologies
• First-Principles Determination of the Structure of Magnesium Borohydride
• Pseudo-ternary LiBH4-LiCl-P2S5 system as structurally disordered bulk electrolyte for all-solid-state lithium batteries

Cited by in corpus (6)

• Fundamental hydrogen storage properties of TiFe-alloy with partial substitution of Fe by Ti and Mn
• Tantalum-Palladium: hysteresis-free optical hydrogen sensor over 7 orders of magnitude in pressure with sub-second response
• In-situ neutron diffraction during reversible deuterium loading in Ti-rich and Mn-substituted Ti(Fe,Mn)0.90 alloys
• Fabrication of bulk delta-phase Zirconium Hydride from Zircaloy-4 for use as moderators in microreactors
• Synthesis, structure and electric conductivity of higher hydrides of ytterbium at high pressure
• Effect of vanadium catalysts on hydrogen evolution from NaBH4