Presenter: Lasse Skov
Title: Magnesium borohydride composites as an electrolyte for all-solid-state magnesium batteries
Affiliation: Aarhus University
Solid-state electrolytes can increase the stability and safety of batteries, compared to organic solvents in existing high voltage batteries. High ionic conductivity at room temperature has been a challenge for magnesium-ion electrolytes.
Mg(BH4)2 ∙ 1.6NH3 – MgO has been synthesised by our group with high ionic conductivity of 2.2e–6 < Mg-ion < 3.6e–3 S cm–1 in the temperature range of 20 to 90 degree C. This study includes a structural analysis and a theoretical explanation, based on DFT calculations, for the cation conductivity promotion observed, and a reversible electrochemical magnesium stripping/plating.