Porous nanocubic Mn3O4–Co3O4 composites and their application as electrochemical supercapacitors

A simple approach has been developed to fabricate ideal supercapacitors based on porous Mn3O4–Co3O4 nanocubic composite electrodes. We can easily obtain porous corner-truncated nanocubic Mn3O4–Co3O4 composite nanomaterials without any subsequent complicated workup procedure for the removal of a hard template, seed or by using a soft template. In such a composite, the porous Mn3O4–Co3O4 enables a fast and reversible redox reaction to improve the specific capacitance. The porous nanocubic Mn3O4–Co3O4 composite electrode can effectively transport electrolytes and shorten the ion diffusion path, which offers excellent electrochemical performance. These results suggest that such porous Mn3O4–Co3O4 composite nanocubes are very promising for next generation high-performance supercapacitors.