| 초록 |
Metal oxide nanoparticles were prepared using continuous supercritical hydrothermal synthesis method that can be applied for mass production. Hydrothermal synthesis of metal oxide (MO, where M is Ni, Cu, Fe, Mn, or Co) nanoparticles from metal nitrate aqueous solution was carried out at 673 K and pressures 30 MPa. The as-synthesized metal oxide nanoparticles were characterized by a variety of techniques, such as XRD,SEM, BET surface area measurement, and electrochemical test. The electrochemical properties of the as-synthesized metal oxide nanoparticles were investigated to determine their suitability as potential anode materials for lithium-ion batteries. In case of Co3O4, the Li/Co3O4 cell was charge-discharged at a constant current density of 0.2857mAcm-2 and showed good charge-discharge capacity. The discharge capacity of the Li/Co3O4 cell drastically decreased with cycle number, but still can be maintained at higher value than carbon material (372 mAhg-1). The supercritical hydrothermal synthesis method might be a useful method to prepare metal oxide nanoparticles for the anode material of lithium batteries. |
