Composite materials based on oxides of d and f elements and carbon layers

Abstract

Nanocrystalline powder (~20 nm) with the composition of (ZrO₂)_0.6(In2O3)_0.04 is synthesized on the basis of a co-precipitation method. After its consolidation, a dense and porous ceramic matrix for supercapacitor electrodes is obtained. The deposition conditions are determined for thin nanocarbon and MnO₂, Co₃O₄ layers on the porous ceramic or metal matrix. It is shown that the model supercapacitor with composite electrodes based on nickel foam and thin layers of nanocarbon and MnO₂ has the highest average specific capacitance.