Catalysis studies and electrode design considerations for Lithium-air batteries

Yi Chun Lu, Jonathon R. Harding, Yasuhiro Tsukada, Hubert A. Gasteiger, Yang Shao-Horn

Publikation: Beitrag in FachzeitschriftKonferenzartikelBegutachtung

Abstract

Rechargeable lithium-air batteries promise up to three-fold higher specific energies compared to conventional lithium-ion batteries. However, very little is known about the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in lithium-air battery cathodes, where oxygen is reduced to lithium (per)oxide in the presence of lithium ions in organic electrolyte. Therefore, we recently developed a rotating disk electrode (RDE) method to study the ORR (discharge reaction) under well-controlled mass-transport conditions, and we will discuss the ORR activity of metal and carbon model-electrodes and compare these findings with discharge data on single-cell Li-air batteries using catalyzed and non-catalyzed high-surface-area carbon electrodes. Electrode design considerations will be discussed. We will also present data on the catalysis of the OER (charging reaction) for several catalysts, using single-cell Li-air batteries as well as electrodes pre-loaded with Li2O2. The catalytic trends for different electrodes will be compared to their catalytic activity in aqueous electrolytes.

OriginalspracheEnglisch
FachzeitschriftACS National Meeting Book of Abstracts
PublikationsstatusVeröffentlicht - 2010
Veranstaltung240th ACS National Meeting and Exposition - Boston, MA, USA/Vereinigte Staaten
Dauer: 22 Aug. 201026 Aug. 2010

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