| 초록 |
The Commercial LiCoO2 particles, which were 7.7㎛ in average diameter, were coated with Al2O3 by a gas suspension spray coating method. The coating amount of Al2O3 on the surface of LiCoO2 was varied from 0.1 to 2 wt.% and compared their electrochemical characteristics with those of bare LiCoO2. Al2O3 coating on the surface of LiCoO2 increased surface area and electrical conductivity, and showed the better cycle and thermal stability even at the higher voltage. The observed optimum Al2O3 coating amount that exhibited the highest capacity retention was 0.2 wt.%.
|
