Complex Metal Hydrides for Hydrogen, Thermal and Electrochemical Energy Storage

Kasper T. Moller, Drew Sheppard, Dorthe B. Ravnsbaek, Craig E. Buckley, Etsuo Akiba, Hai-Wen Li*, Torben R. Jensen

*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperReviewResearchpeer-review

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Abstract

Hydrogen has a very diverse chemistry and reacts with most other elements to form compounds, which have fascinating structures, compositions and properties. Complex metal hydrides are a rapidly expanding class of materials, approaching multi-functionality, in particular within the energy storage field. This review illustrates that complex metal hydrides may store hydrogen in the solid state, act as novel battery materials, both as electrolytes and electrode materials, or store solar heat in a more efficient manner as compared to traditional heat storage materials. Furthermore, it is highlighted how complex metal hydrides may act in an integrated setup with a fuel cell. This review focuses on the unique properties of light element complex metal hydrides mainly based on boron, nitrogen and aluminum, e.g., metal borohydrides and metal alanates. Our hope is that this review can provide new inspiration to solve the great challenge of our time: efficient conversion and large-scale storage of renewable energy.

Original languageEnglish
Article number1645
JournalEnergies
Volume10
Issue10
Number of pages30
ISSN1996-1073
DOIs
Publication statusPublished - 18 Oct 2017

Keywords

  • complex metal hydrides
  • thermal energy storage
  • hydrogen storage
  • solid-state electrolytes
  • electrodes
  • fuel cell
  • LITHIUM-ION BATTERIES
  • N-H SYSTEM
  • X-RAY-DIFFRACTION
  • SODIUM SUPERIONIC CONDUCTION
  • PEROVSKITE-TYPE HYDRIDE
  • HIGH-TEMPERATURE HEAT
  • 2 SOLVENT ADDUCTS
  • CRYSTAL-STRUCTURE
  • ALUMINUM-HYDRIDE
  • MAGNESIUM HYDRIDE

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