Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
Communications
Rechargeable Li-Air Batteries with Carbonate-Based Liquid Electrolytes
Fuminori MIZUNOShinji NAKANISHIYukinari KOTANIShoji YOKOISHIHideki IBA
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JOURNALS OPEN ACCESS

2010 Volume 78 Issue 5 Pages 403-405

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Abstract

Rechargeable Li-air battery is a candidate for post Li-ion battery with high energy density. In this paper, the rechargeability of Li-air battery over 100 cycles was confirmed and its capacity retention over 60% was achieved. Nevertheless, a large voltage gap between the discharge-charge profiles was observed. Here, a discharged product formed on a cathode was investigated by TEM observation and FT-IR spectroscopy. It was found that the main product formed in discharge was not an ideal compound, Li2O2, but was carbonate species issued from the decomposition of carbonate-based electrolyte solvent.

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© 2010 The Electrochemical Society of Japan
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