Preparation of Ni/Mn compounds/ordered mesoporous carbon composite for use in an electrochemical supercapacitor

Abstract

The electrochemical behavior of a series of composites synthesized by a combination of incipient wetness impregnation and hydrothermal method for the first time is systematically compared (using cyclic voltammetric and electrochemical impedance spectroscopic analyses). Structural and morphological characterizations of the composites were undertaken using power X-ray diffraction (XRD), N 2 adsorption/desorption isotherms and transmission electron microscopy (TEM). The results indicated that the binary nickel/manganese compounds of the Ni-Mn/ordered mesoporous carbon (OMC) composite had a synergistic effect of both components.

Synthesis and Electrochemical Properties of Mesoporous VOx@Carbon Composites

“…However some metal oxides possess significantly higher specific capacitance via pseudo-capacitance. As reported in the literature [2], approaches to combine EDLCs and pseudo-capacitance have been made to achieve optimized performance, which has led to the study of many new materials with both EDLC performance and pseudo-capacitance. Ruthenium oxide, RuO 2 , is widely studied because it is conductive and has a fairly high specific capacitance.…”