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An Efficient Halogen‐Free Electrolyte for Use in Rechargeable Magnesium Batteries
Author(s) -
Tutusaus Oscar,
Mohtadi Rana,
Arthur Timothy S.,
Mizuno Fuminori,
Nelson Emily G.,
Sevryugina Yulia V.
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201412202
Subject(s) - electrolyte , magnesium , electrochemistry , electrochemical window , battery (electricity) , halogen , cathode , inorganic chemistry , chemistry , anode , halide , materials science , organic chemistry , alkyl , electrode , ionic conductivity , power (physics) , physics , quantum mechanics
Unlocking the full potential of rechargeable magnesium batteries has been partially hindered by the reliance on chloride‐based complex systems. Despite the high anodic stability of these electrolytes, they are corrosive toward metallic battery components, which reduce their practical electrochemical window. Following on our new design concept involving boron cluster anions, monocarborane CB 11 H 12 − produced the first halogen‐free, simple‐type Mg salt that is compatible with Mg metal and displays an oxidative stability surpassing that of ether solvents. Owing to its inertness and non‐corrosive nature, the Mg(CB 11 H 12 ) 2 /tetraglyme (MMC/G4) electrolyte system permits standardized methods of high‐voltage cathode testing that uses a typical coin cell. This achievement is a turning point in the research and development of Mg electrolytes that has deep implications on realizing practical rechargeable Mg batteries.