摘要
Using Mn(OH)2 as precursor, LiOH as lithiat- ing agent and (NH4)2S2O8 as oxidant, layered o-LiMnO2 was obtained by a novel method——in situ oxidation-intercalation under mild conditions (80℃). The product was characterized by XRD, ICP, TEM and Li-NMR. The results reveal that 7 orthorhombic LiMnO2 with high purity and good crystallin- ity 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.
Using Mn(OH)_2 as precursor, LiOH as lithiating agent and (NH_4)_2S_2O_8 asoxidant, layered o-LiMnO_2 was obtained by a novel method--in situ oxidation-intercalation undermild conditions (80 deg C). The product was characterized by XRD, ICP, TEM and 7Li-NMR. The resultsreveal that orthorhombic LiMnO_2 with high purity and good crystallinity can be obtained by thismethod. During electrochemical tests, a LiMnO_2/Li cell shows an initial reversible capacity of 208mAh centre dot g^(-1) and a reversible capacity of 180 mAh centre dot g^(-1) after 30 cycles at roomtemperature.
基金
This work was supported by the National Natural Science Foundation of China(Grant No.20301002)
Beijing Nova Fund(Grant No.H013610350112).
