Solution synthesis of nanometric layered cobalt oxides for electrochemical ap…

Abstract. Dispersed Na0.6CoO2·yH2O and Li0.5CoO2 powders have been obtained at room temperature by rapid precipitation in aqueous solutions of LiOH or NaOH in the presence of a strong oxidizer. The precipitates are well crystallized and consist of nanoscale platelets with high specific area (above 100 m2/g). The Li0.5CoO2 phase is stable in aqueous electrolytes whereas the Na0.6CoO2·yH2O …