Preparation and characterization of CoO used as anodic material of lithium battery

The characteristics of CoO prepared from the calcination of Co(OH)2 (precursor of CoO) in the N2 atmosphere were analyzed, and the charge/discharge properties of CoO was also investigated in this paper. Increasing the calcination temperature from 200 to 900 °C the grain size of CoO increased from 6.59 to 31.5 nm, and the BET surface area decreased from 89.83 to 0.47 m2 g−1. For CoO calcinated at 200 °C the maximum charge capacity, the coulomb efficiency and the irreversible capacity at the first cycle of Li/CoO battery were found to be 1233.57 mAh g−1, 98.46% and 305.87 mAh g−1, respectively. The irreversible capacity in the first cycle could be recovered in the following charge/discharge cycles.