The Effect of Water on the Discharge Capacity of a Non-Catalyzed Carbon Cathode for Li-O2 Batteries

In this study we report the strong effect of water or organic carbonates on the specific capacity during the first discharge of the cathode of a Li-O2 cell, using Vulcan-based positive electrodes. An improved cell design allowed us to avoid contaminations from atmospheric air and to compare the disc...

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Bibliographic Details
Published inElectrochemical and solid-state letters Vol. 15; no. 4; pp. A45 - A48
Main Authors Meini, Stefano, Piana, Michele, Tsiouvaras, Nikolaos, Garsuch, Arnd, Gasteiger, Hubert A.
Format Journal Article
LanguageEnglish
Published The Electrochemical Society 2012
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Summary:In this study we report the strong effect of water or organic carbonates on the specific capacity during the first discharge of the cathode of a Li-O2 cell, using Vulcan-based positive electrodes. An improved cell design allowed us to avoid contaminations from atmospheric air and to compare the discharge in water-free electrolyte with that of water contaminated cells, getting an increased specific capacity up to one order of magnitude. Understanding the mechanism that limits or enhances the specific capacity of the positive electrode is very important in order to improve performance and durability of Li-O2 cells.
Bibliography:005204ESL
ISSN:1099-0062
1944-8775
DOI:10.1149/2.005204esl