METHOD FOR PREPARING MnO2/CARBON COMPOSITE, MNO2/CARBON COMPOSITE PREPARED BY THE METHOD, AND LITHIUM-AIR SECONDARY BATTERY INCLUDING THE COMPOSITE
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United States of America Patent
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Issued Date -
Jan 31, 2013
app pub date -
Oct 17, 2011
filing date -
Jul 28, 2011
priority date (Note) -
Abandoned
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Abstract
Disclosed is a method for preparing an MnO2/carbon composite for a lithium-air secondary battery by preparing a precursor solution by dissolving permanganate powder in distilled water, preparing a MnO2/carbon composite by dispersing carbon in the precursor solution and using a reducing agent, and mixing the MnO2/carbon composite with polyvinylidene fluoride (PVdF) and supporting the mixture on nickel foam. According to the method for preparing a MnO2/carbon composite for a lithium-air secondary battery, the MnO2/carbon composite is prepared by dispersing carbon in a permanganate solution, instead of simply mixing carbon with manganese oxide, and thus the binding force between carbon and manganese oxide and the dispersion of carbon in manganese oxide can increase. The MnO2/carbon composite prepared by the above method has improved catalytic performance as an air electrode for a lithium-air secondary battery and thus can be effectively used as an electrode material for lithium-air secondary batteries.
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