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- Kwak, Won-Jin
- Electrochemical Materials & System Design Lab.
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An Advanced Lithium-Air Battery Exploiting an Ionic Liquid-Based Electrolyte
- Author(s)
- Elia, G. A., Hassoun, J., Kwak, Won-Jin, Sun, Y. -K., Scrosati, B., Mueller, F., Bresser, D., Passerini, S., Oberhumer, P., Tsiouvaras, N., Reiter, J.
- Issued Date
- 2014-11
- Citation
- NANO LETTERS, v.14, no.11, pp.6572 - 6577
- Abstract
- A novel lithium-oxygen battery exploiting PYR14TFSI-LiTFSI as ionic liquid-based electrolyte medium is reported. The Li/PYR14TFSI-LiTFSI/O-2 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/O-2 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.
- Publisher
- AMER CHEMICAL SOC
- ISSN
- 1530-6984
- Keyword (Author)
- Li-O-2 cell, ionic liquied, electrolyte, energy efficiency, lithium-oxygen battery
- Keyword
- NONAQUEOUS ELECTROLYTE, OXYGEN REDUCTION, LI, STABILITY, SOLVENTS, PERFORMANCE
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