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Magnesium Ethylenediamine Borohydride as Solid-State Electrolyte for Magnesium Batteries

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2017
Author Elsa Roedern, Ruben-Simon Kühnel, Arndt Remhof, Corsin Battaglia,
Project Novel Ionic Conductors
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Original article (peer-reviewed)

Journal Scientific Reports
Volume (Issue) 7
Page(s) 46189
Title of proceedings Scientific Reports
DOI 10.1038/srep46189

Open Access

URL http://www.nature.com/articles/srep46189
Type of Open Access Publisher (Gold Open Access)

Abstract

Solid-state magnesium ion conductors with exceptionally high ionic conductivity at low temperatures, 5 × 10−8 Scm−1 at 30 °C and 6 × 10−5 Scm−1 at 70 °C, are prepared by mechanochemical reaction of magnesium borohydride and ethylenediamine. The coordination complexes are crystalline, support cycling in a potential window of 1.2 V, and allow magnesium plating/stripping. While the electrochemical stability, limited by the ethylenediamine ligand, must be improved to reach competitive energy densities, our results demonstrate that partially chelated Mg2+ complexes represent a promising platform for the development of an all-solid-state magnesium battery.
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