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Scientific article
Review
Open access
English

Boron Hydrogen Compounds: Hydrogen Storage and Battery Applications

Published inMolecules, vol. 26, no. 24, 7425
Publication date2021-12-07
First online date2021-12-07
Abstract

About 25 years ago, Bogdanovic and Schwickardi (B. Bogdanovic, M. Schwickardi: J. Alloys Compd. 1–9, 253 (1997) discovered the catalyzed release of hydrogen from NaAlH4. This discovery stimulated a vast research effort on light hydrides as hydrogen storage materials, in particular boron hydrogen compounds. Mg(BH4)2, with a hydrogen content of 14.9 wt %, has been extensively studied, and recent results shed new light on intermediate species formed during dehydrogenation. The chemistry of B3H8−, which is an important intermediate between BH4− and B12H122−, is presented in detail. The discovery of high ionic conductivity in the high-temperature phases of LiBH4 and Na2B12H12 opened a new research direction. The high chemical and electrochemical stability of closo-hydroborates has stimulated new research for their applications in batteries. Very recently, an all-solid-state 4 V Na battery prototype using a Na4(CB11H12)2(B12H12) solid electrolyte has been demonstrated. In this review, we present the current knowledge of possible reaction pathways involved in the successive hydrogen release reactions from BH4− to B12H122−, and a discussion of relevant necessary properties for high-ionic-conduction materials.

Keywords
  • Hydrogen storage
  • Boron hydrogen compounds
  • All solid state battery
  • Sodium battery
Citation (ISO format)
HAGEMANN, Hans-Rudolf. Boron Hydrogen Compounds: Hydrogen Storage and Battery Applications. In: Molecules, 2021, vol. 26, n° 24, p. 7425. doi: 10.3390/molecules26247425
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ISSN of the journal1420-3049
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Technical informations

Creation12/10/2021 10:26:00 AM
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