Co₃O₄/MnO₂Core/Shell-Nanostructured Pseudocapacitor Electrode

Abstract

With high powerdensity, specific capacitance, and the use of low-cost elect-rode materials, the pseudocapacitor has been considered anideal system that is capable of bridging the gap between theelectrical double-layer capacitor and the Li-ion battery.However, several issues, such as poor rate capability andcyclability resulting from the low electrical conductivity ofthe active materials, as well as Faradaic redox reactions forcharge storage, must be addressed before practical utilizationis feasible. A great deal of effort has been devoted toaddressing these issues, including nanostructuring activematerials, developing a novel electrode substrate, and syn-thesizing carbon-based nanocomposites.