期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 21, 页码 6967-6971出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201902009
关键词
energy storage; magnesium electrolytes; magnesium batteries; perfluorinated pinacolatoborate
资金
- Utah State University
- Utah Science Technology and Research initiative (USTAR) UTAG award
- China CSC Abroad Study Fellowship
- Center for Biomolecular Structure and Dynamics CoBRE (National Institutes of Health, CoBRE NIGMS) [P20GM103546]
- NSF MRI [CHE-1337908]
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(O2C2(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 197mV overpotential, enabling reversible Mg deposition, and an anodic stability of up to 4.0V vs. Mg. The Mg-FPB electrolyte was applied to assemble a high voltage, rechargeable Mg/MnO2 battery with a discharge capacity of 150mAhg(-1).
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