Improved electrochemical performance and solid electrolyte interphase properties of electrolytes based on lithium bis(fluorosulfonyl)imide for high content silicon anodes
Karina Asheim, Per Erik Vullum, Nils P. Wagner, Hanne Flåten Andersen, Jan Petter Mæhlen, Ann Mari Svensson
Abstract
Lithiation of silicon in an LiFSI electrolyte results in a bilayer SEI, with an inner, inorganic layer, and an outer, organic. This SEI is more conductive, flexible and homogeneous compared to the SEI formed in an LiPF 6 electrolyte.
Topics & Concepts
ElectrolyteLithium (medication)SiliconMaterials scienceElectrochemistryElectrodeChemical engineeringX-ray photoelectron spectroscopyDielectric spectroscopyInorganic chemistryChemistryEngineeringEndocrinologyMedicineMetallurgyPhysical chemistryAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesSupercapacitor Materials and Fabrication