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A Stable, Non-Corrosive Perfluorinated Pinacolatoborate Mg Electrolyte for Rechargeable Mg Batteries.

ABSTRACT: Mg batteries are a promising energy storage system because of the physicochemical merits of Mg as an anode material. However, the lack of electrochemically and chemically stable Mg electrolytes impedes the development of Mg batteries. In this study, a newly designed chloride-free Mg perfluorinated pinacolatoborate, Mg[B(O2 C2 (CF3 )4 )2 ]2 (abbreviated as Mg-FPB), was synthesized by a convenient method from commercially available reagents and fully characterized. The Mg-FPB electrolyte delivered outstanding electrochemical performance, specifically, 95?% Coulombic efficiency and 197?mV overpotential, enabling reversible Mg deposition, and an anodic stability of up to 4.0?V vs. Mg. The Mg-FPB electrolyte was applied to assemble a high voltage, rechargeable Mg/MnO2 battery with a discharge capacity of 150?mAh?g-1 .

SUBMITTER: Luo J

PROVIDER: S-EPMC6699509 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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A Stable, Non-Corrosive Perfluorinated Pinacolatoborate Mg Electrolyte for Rechargeable Mg Batteries.

Luo Jian J Bi Yujing Y Zhang Liping L Zhang Xiaoyin X Liu Tianbiao Leo TL

Angewandte Chemie (International ed. in English) 20190322 21

Mg batteries are a promising energy storage system because of the physicochemical merits of Mg as an anode material. However, the lack of electrochemically and chemically stable Mg electrolytes impedes the development of Mg batteries. In this study, a newly designed chloride-free Mg perfluorinated pinacolatoborate, Mg[B(O2 C2 (CF3 )4 )2 ]2 (abbreviated as Mg-FPB), was synthesized by a convenient method from commercially available ...[more]

PMID: 30834664

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