title: Electrochemical and electron microscopic characterization of Super-P based cathodes for Li-O2 batteries.
abstract: Aprotic rechargeable Li-O2 batteries are currently receiving considerable interest because they can possibly offer significantly higher energy densities than conventional Li-ion batteries. The electrochemical behavior of Li-O2 batteries containing bis(trifluoromethane)sulfonimide lithium salt (LiTFSI)/tetraglyme electrolyte were investigated by galvanostatic cycling and electrochemical impedance spectroscopy measurements. Ex-situ X-ray diffraction and scanning electron microscopy were used to evaluate the formation/dissolution of Li2O2 particles at the cathode side during the operation of Li-O2 cells.
authors.affiliation: Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg, 89081 Ulm, Germany.
authors.forename: Mario
authors.initials: M
authors.lastname: Marinaro
authors.forename: Santhana K
authors.initials: SK
authors.lastname: Eswara Moorthy
authors.forename: Jörg
authors.initials: J
authors.lastname: Bernhard
authors.forename: Ludwig
authors.initials: L
authors.lastname: Jörissen
authors.forename: Margret
authors.initials: M
authors.lastname: Wohlfahrt-Mehrens
authors.forename: Ute
authors.initials: U
authors.lastname: Kaiser
keywords: Li–O2 batteries; aprotic electrolyte; impedance spectroscopy; scanning electron microscopy