期刊
ELECTROCHEMISTRY
卷 78, 期 5, 页码 403-405出版社
ELECTROCHEMICAL SOC JAPAN
DOI: 10.5796/electrochemistry.78.403
关键词
Li-Air Battery; Rechargeablility; Air Cathode; Li2O2
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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