Abstract
Using Mn(OH)2 as precursor, LiOH as lithiating agent and (NH4)2S2O8 as oxidant, layeredo-LiMnO2 was obtained by a novel method—in situ oxidation-intercalation under mild conditions (80 °C). The product was characterized by XRD, ICP, TEM and7Li-NMR. The results reveal that orthorhombic LiMnO2 with high purity and good crystallinity can be obtained by this method. During electrochemical tests, a LiMnO2/Li cell shows an initial reversible capacity of 208 mAh · g−1 and a reversible capacity of 180 mAh · g−1 after 30 cycles at room temperature.
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