| 초록 |
We describe insitu synthesis of LMO/graphene nanosheets network by simple hydrothermal precipitation method and were analyzed via XRD, FTIR, Raman, FE-SEM and HR-TEM techniques. The electrochemical behavior of LMO/xG nanocomposites were characterized. The synthesized LMO/xG nanocomposites are phase pure with uniform particle formation and shows a pair of redox peaks with reduced Rct values, leads to better performance in the cycling and rate studies. Benefitted from LMO/xG nanocomposites exhibit remarkable specific capacity of values, especially the LMO/5G nanocomposite electrode is delivered a reversible capacity of about 132 mAh g-1 after 500 cycles with 89% columbic efficiency and 66% discharge capacity at 20C rate. This work suggests that the in situ conductive layer wrapped LMO nanocomposite electrodes are to be a promising candidate for the high performance Li-ion batteries. |
