摘要
Microwave synthesis method was applied to the fast preparation of LiCoO2. The structure of the synthesized oxides was analyzed by using X-ray diffraction. Only single-phase LiCoO2 was obtained. Electrochemical behaviors of LiCoO2 were investigated by charge-discharge cycling properties in the voltage range of 3.004.35 V（（vs Li）.） The results show that the prepared LiCoO2 powders calcinated at 900 ℃ for 120 min exhibit an initial charge and discharge capacity of 168 and 162 mA·h·g-1 at 0.1C current rate, respectively, as compared to 159 and 154 (mA·h·g-1) of LiCoO2 synthesized by conventional means. In addition, more than 95% of the capacity is retained （even） after 10 cycles. But with the increase of calcinating time, its electrochemical properties deteriorate. Compared with the conventional method, the microwave heating method is simple, fast, and with high energy efficiency.
Microwave synthesis method was applied to the fast preparation of LiCoO_2. The structure of the synthesized oxides was analyzed by using X-ray diffraction. Only single-phase LiCoO_2 was obtained. Electrochemical behaviors of LiCoO_2 were investigated by charge-discharge cycling properties in the voltage range of 3.004.35 V((vs Li).) The results show that the prepared LiCoO_2 powders calcinated at 900 ℃ for 120 min exhibit an initial charge and discharge capacity of 168 and 162 mA·h·g^(-1) at 0.1C current rate, respectively, as compared to 159 and 154 (mA·h·g^(-1)) of LiCoO_2 synthesized by conventional means. In addition, more than 95% of the capacity is retained (even) after 10 cycles. But with the increase of calcinating time, its electrochemical properties deteriorate. Compared with the conventional method, the microwave heating method is simple, fast, and with high energy efficiency.
