Electrochemical and electron microscopic characterization of Super-P based cathodes for Li–O2 batteries

Beilstein Journal of Nanotechnology

Ute Kaiser¹  Jörg Bernhard¹  Santhana K. Eswara Moorthy¹  Mario Marinaro²  Ludwig Jörissen²  Margret Wohlfahrt-Mehrens² 

[1] Electron Microscopy Group of Materials Science, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany;Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg, 89081 Ulm, Germany;

关键词: aprotic electrolyte;    impedance spectroscopy;    Li–O2 batteries;    scanning electron microscopy;   

DOI  :  10.3762/bjnano.4.74

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown