Rechargeable Li-Air Batteries with Carbonate-Based Liquid Electrolytes

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 wa...

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Bibliographic Details
Published in:Denki kagaku oyobi kōgyō butsuri kagaku 2010/05/05, Vol.78(5), pp.403-405
Main Authors: MIZUNO, Fuminori, NAKANISHI, Shinji, KOTANI, Yukinari, YOKOISHI, Shoji, IBA, Hideki
Format: Article
Language:English
Subjects:
Air Cathode
Batteries
Carbonates
Discharge
Electric batteries
Electric potential
Electrolytes
Li-Air Battery
Li2O2
Liquids
Rechargeablility
Voltage
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Summary: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.
ISSN:1344-3542
2186-2451
DOI:10.5796/electrochemistry.78.403