摘要
This study reports an innovative approach of solid state reaction for the production of lithium cobalt oxide (LiCoO2/LCO) using commercially available tissue matrices. Li+ and Co2+ grafted tissue matrices calcined at 700°C for 6 hours to prepare black color LCO materials. A series of techniques such as FT-IR, XRD, FESEM, TGA and UV-visible spectroscopy were applied for characterization of the prepared LCO materials. Fourier-transform infrared spectroscopy (FT-IR) data identified the vibration mode of CoO6 and O-Co-O in the prepared LCO materials. FESEM images of tissue assisted LCO possessed larger size and voids compared to the LCO prepared without any tissue matrix. X-ray diffraction (XRD) data approved the layer structure of LCO with R3m space group. Analysis of XRD spectra revealed that tissue matrices reduced the unit cell lattice constant of LCO materials. Properties such as X-ray density (ρx), bulk density (ρb) and grain size (D) have been calculated from the XRD spectrum for assessment of the structural properties of the prepared LCO materials. Thermal analysis results indicated the relation of tissue matrix combustion carbon coating on LCO surface for different absorption behavior of the prepared materials. The band gap of tissue assisted LCO was found to decrease compared to the LCO prepared without tissue matrix. The synthesis method used in this study can be broadly applicable as a simple and inexpensive approach for the preparation of LCO materials of Li-ion battery.
This study reports an innovative approach of solid state reaction for the production of lithium cobalt oxide (LiCoO2/LCO) using commercially available tissue matrices. Li+ and Co2+ grafted tissue matrices calcined at 700°C for 6 hours to prepare black color LCO materials. A series of techniques such as FT-IR, XRD, FESEM, TGA and UV-visible spectroscopy were applied for characterization of the prepared LCO materials. Fourier-transform infrared spectroscopy (FT-IR) data identified the vibration mode of CoO6 and O-Co-O in the prepared LCO materials. FESEM images of tissue assisted LCO possessed larger size and voids compared to the LCO prepared without any tissue matrix. X-ray diffraction (XRD) data approved the layer structure of LCO with R3m space group. Analysis of XRD spectra revealed that tissue matrices reduced the unit cell lattice constant of LCO materials. Properties such as X-ray density (ρx), bulk density (ρb) and grain size (D) have been calculated from the XRD spectrum for assessment of the structural properties of the prepared LCO materials. Thermal analysis results indicated the relation of tissue matrix combustion carbon coating on LCO surface for different absorption behavior of the prepared materials. The band gap of tissue assisted LCO was found to decrease compared to the LCO prepared without tissue matrix. The synthesis method used in this study can be broadly applicable as a simple and inexpensive approach for the preparation of LCO materials of Li-ion battery.
