Discharge characteristics of silver/lithium cobalt oxide cell for medical application

The discharge capacity and storage characteristics of Ag/LiCoO2 and Cu/LiCoO2 cells are studied. The discharge capacity of the Ag/LiCoO2 cell is better than that of the Cu/LiCoO2 cell. The Ag/LiCoO2 cell gives a maximum discharge capacity of 190 mAh g−1. The structure of lithium cobalt oxide changes from trigonal to monoclinic (a=4.61 Å, b=2.81 Å, c=4.80 Å, β=122.6°) system as the content of lithium is decreased. The Ag/LiCoO2 cell shows good storage properties, there is little decrease in discharge capacity after 7 days at room temperature.