Fluoroethylene carbonate as an important component in organic carbonate electrolyte solutions for lithium sulfur batteries |
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| Institution: | 1. Department of Chemistry, Bar-Ilan University, Ramat Gan 52900, Israel;2. BASF SE, Ludwigshafen 67056, Germany;1. School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China;2. Department of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;3. Military Power Sources Research and Development Center, Research Institute of Chemical Defense, Beijing 100191, China |
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| Abstract: | The benefits of fluoroethylene carbonate (FEC)-based electrolyte solution (1 M LiPF6 in FEC/dimethyl carbonate (DMC)) over ethylene carbonate (EC)-based electrolyte solution (1 M LiPF6 in EC/DMC) for the cycling of sulfur/carbon (S/C) composite cathodes were demonstrated for S/C composites prepared with two drastically different types of carbon hosts, micrometer-sized activated carbon powder (AC1) and carbonized polyacrylonitrile (PAN) cloth. The formation of solid electrolyte interphase (SEI) on the surface of the cycled S/C electrodes was demonstrated using scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). |
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