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A Transmission Electron Microscopy Study of the Electrochemical Process of Lithium–Oxygen Cells

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journal contribution
posted on 08.08.2012, 00:00 by Hun-Gi Jung, Hee-Soo Kim, Jin-Bum Park, In-Hwan Oh, Jusef Hassoun, Chong Seung Yoon, Bruno Scrosati, Yang-Kook Sun
The electrochemical reaction of a lithium–oxygen cell using a tetraethylene glycol dimethyl ether-lithium triflate, TEGDME-LiCF3SO3 electrolyte, is investigated by a detailed transmission electron microscopy analysis. The results confirm the reversibility of the process by showing the formation–dissolution of lithium peroxide, Li2O2, upon repeating cell charge and discharge cycles.