Mg3(BH4)4(NH2)2 as Inorganic Solid Electrolyte with High Mg2+ Ionic Conductivity
(2020) ACS Applied Energy Materials — Vol. 3, n° 7, p. 6093-6097 (2020)
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- Authors
Hautier, Geoffroy 
Janot, Raphaël
- Abstract
- Mg3(BH4)4(NH2)2 compound was synthesized through the investigation of the Mg(BH4)2-Mg(NH2)2 phase diagram; its crystal structure was solved in a tetragonal unit cell with the space group I4̅. Interestingly, Mg3(BH4)4(NH2)2 has a high thermal stability with a decomposition temperature above 190 °C and exhibits a high Mg2+ ionic conductivity of 4.1 × 10−5 S·cm−1 at 100 °C with a low activation energy (0.84 eV). The reversible Mg deposition/stripping was demonstrated at 100 °C when using Mg3(BH4)4(NH2)2 as solid electrolyte. Thus, Mg3(BH4)4(NH2)2 is a compound that could help to develop rechargeable Mg-ion solid-state batteries.
- Affiliations
Citations
Le Ruyet, R., Fleutot, B., Berthelot, R., Benabed, Y., Hautier, G., Filinchuk, Y., & Janot, R. (2020). Mg3(BH4)4(NH2)2 as Inorganic Solid Electrolyte with High Mg2+ Ionic Conductivity. ACS Applied Energy Materials, 3(7), 6093-6097. https://doi.org/10.1021/acsaem.0c00980 (Original work published 2020)