Enhanced electrochemical activity of low temperature solution process synthesized Co3O4 nanoparticles for pseudo-supercapacitors applications

The highly uniform Co3O4 nanoparticles (NPs) were synthesized by a low temperature solution process at 70 degrees C and utilized for pseudo-supercapacitors. The synthesized Co3O4 NPs possessed well-crystalline semispherical morphology and were extensively characterized in terms of structural, crystalline and electrochemical properties. The synthesized Co3O4 NPs based electrode exhibited a reasonable specific capacitance of similar to 304 F/g in 1 M KOH aqueous solution. The capacitance was drastically increased to similar to 480 F/g when the electrode was prepared by mixing Co3O4 NPs and super-P carbon. Co3O4 NPs based electrodes attained the excellent cycling stability with the retention ratio of similar to 88.6% after 1000 cycles. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.