Self-propagating high-temperature synthesis of cathode material LiCoO2
SUN Bing-xue1,CHEN Xiu-juan2,MA Xiao-jie1
（1. State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou 730050, China 2. School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou 730050, China）
Abstract：Layered cathode material LiCoO2 was synthesized by self-propagating high-temperature synthesis. X-ray diffractometer and scanning electron microscope (SEM) were used to investigate the effects of heat-treatment temperature, heat-treatment time and the mole ratio of Li to Co on purity, crystal structure and microstructure of LiCoO2. The results show that the optimum conditions are as follows: molar ratio of Li to Co is 1.000∶1.000，molar ratio of C6H12N4 to Co is 1.0∶3.0，heat-treatment temperature is 800 ℃ and heat-treatment time is 1.5 h. Under the optimum condition, the percentage of LiCoO2 phase in the products is near to 100%, and the crystal has good layer structure.
2015, Vol. 25 
