Elia GA, Hassoun J, Kwak WJ, Sun YK, Scrosati B, Mueller F, Bresser D, Passerini S, Oberhumer P, Tsiouvaras N, Reiter J. An advanced lithium-air battery exploiting an ionic liquid-based electrolyte.
Nano Lett 2014;
14:6572-6577. [PMID:
25329836 DOI:
10.1021/nl5031985]
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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.
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