화학공학소재연구정보센터
Applied Surface Science, Vol.425, 201-211, 2017
Hydrothermal synthesis of Mn-doped ZnCo2O4 electrode material for high-performance supercapacitor
Mn-doped ZnCo2O4 nanoparticle has been synthesized by hydrothermal method without adding any surfactants. Structural, morphological and electrochemical performances have been studied for the pure and various concentration of Mn-doped ZnCo2O4 nanoparticles. XRD and Raman studies demonstrate the crystalline structure of the material. Specific capacitance of the 10 wt% Mn doped ZnCo2O4 nanomaterial is analysed using the three-electrode system. 10 wt% Mn-doped ZnCo2O4 has a maximum capacitance of 707.4 F g(-1) at a current density of 0.5 A g(-1). Coulombic efficiency of the material is 96.3% for 500 cycles in the KOH electrolyte medium. A two-electrode device using 10 wt% Mn-doped ZnCo2O4 exhibits the highest specific capacitance of 6.5 F g(-1) at a current density of 0.03 A g(-1) which is the suitable material for supercapacitor application. (C) 2017 Elsevier B.V. All rights reserved.