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Dr. Cüneyt Kavakli, Dr. Stefano Meini, Gregor Harzer, Dr. Nikolaos Tsiouvaras, Dr. Michele Piana, Armin Siebel, Dr. Arnd Garsuch, Prof. Dr. Hubert A. Gasteiger and Dr. Juan Herranz Nanosized Carbon-Supported Manganese Oxide Phases as Lithium–Oxygen Battery Cathode Catalysts ChemCatChem 5

Version of Record online: 13 SEP 2013 | DOI: 10.1002/cctc.201300331

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The truth behind the film: Manganese oxides are the O2 evolution catalysts of choice in many studies on lithium–air batteries, based on their presumed activity for the oxidation of Li2O2. We show that this catalytic effect is apparent only if Li2O2 is in the form of large particles, unlike the monolayer-thick films produced upon Li-O2 battery discharge. This discrepancy implies that tests with prefilled electrodes should not be regarded as indicative of the catalytic properties of a material in a real Li-O2 cell.

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