Journal of Materials Chemistry A (Hot Papers) : “Investigation of the dynamics in KSiH3 and new bi-anionic K(SiH3)1−x(BH4)x complex hydrides by MAS-NMR spectroscopy”
Abstract:
As part of the SOLHYD (Solid Hydrogen Storage) project) under the PEPR H₂ program, numerous research teams have set out to identify new materials for the chemical storage of hydrogen in the form of complex solid hydrides.
Using NMR, we demonstrate in this paper that it is possible to mix two simple, well-known hydrides, KSiH₃ and KBH₄, to form a homogeneous solid solution. Although the performance is not yet satisfactory (H₂ desorption is too energy-intensive), these results point to a new direction in the development of new polyanionic materials for efficient hydrogen storage.
Reference:
Investigation of the dynamics in KSiH3 and new bi-anionic K(SiH3)1−x(BH4)x complex hydrides by MAS-NMR spectroscopy
Alexandre Bernard, Hanyu Hu, Matthias Jollain, Thibault Charpentier, Fermin Cuevas, Romain Moury and Raphaël Janot, J. Mater. Chem. A, 2026, Advance Article.
Évolution des spectres RMN MAS du silicium-29 des solutions solides K(SiH3)1-x(BH4)x . Du spectre fin de KSiH3, l’incorporation de BH4– induit un désordre structural qui se manifeste clairement par un élargissement du spectre. Ce type de désordre peut-être propice à améliorer les performances de désorption du matériaux, si la bonne combinaison est trouvée.
Contact : T. Charpentier, NIMBE/LSDRM.