LiNixCo1-xO2 cathode materials have been prepared using a soft chemistry route for 0 less than or equal to x less than or equal to 1. Co-precipitation of hydroxides is followed by drying and heating at temperatures between 700 and 800 degrees C for a short time (2 to 5 h) under oxygen flow. Due to the high reactivity of the co-precipitates, preparation time is shorter than with powders mixing methods generally used, A DTA-TGA study has been performed for each co-precipitate. LiNixCo1-xO2 compounds show good crystallinity, but lithium deficiency appears for nickel-rich samples. LiNi0.8Co0.2O2 shows the best electrochemical charge-discharge behavior among all the nickel-cobalt compounds studied. This has been attributed to a low Lithium deficiency and to a high nickel content.