A novel lithium−oxygen battery exploiting PYR14TFSI−LiTFSI as ionic liquid-based electrolyte medium is reported. The Li/PYR14TFSI−LiTFSI/O2 battery was fully characterized by electrochemical impedance spectroscopy, capacity-limited cycling, field emission scanning electron microscopy, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. The results of this extensive study demonstrate that this new Li/O2 cell is characterized by a stable electrode−electrolyte interface and a highly reversible charge−discharge cycling behavior. Most remarkably, the charge process (oxygen oxidation reaction) is characterized by a very low overvoltage, enhancing the energy efficiency to 82%, thus, addressing one of the most critical issues preventing the practical application of lithium−oxygen batteries.
An advanced lithium-air battery exploiting an ionic liquid-based electrolyte
HASSOUN, Jusef;
2014
Abstract
A novel lithium−oxygen battery exploiting PYR14TFSI−LiTFSI as ionic liquid-based electrolyte medium is reported. The Li/PYR14TFSI−LiTFSI/O2 battery was fully characterized by electrochemical impedance spectroscopy, capacity-limited cycling, field emission scanning electron microscopy, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. The results of this extensive study demonstrate that this new Li/O2 cell is characterized by a stable electrode−electrolyte interface and a highly reversible charge−discharge cycling behavior. Most remarkably, the charge process (oxygen oxidation reaction) is characterized by a very low overvoltage, enhancing the energy efficiency to 82%, thus, addressing one of the most critical issues preventing the practical application of lithium−oxygen batteries.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
