Three‐dimensional micro–nanorods‐like structure bimetallic oxide fabricated by dealumination strategy for supercap electrodes

Chemical dealloying is an emerging strategy that can be applied to synthesize porous materials. The structure morphologies of the active materials were precisely regulated by designing the various NaOH corrosion solutions. Three-dimensional micro–nanorods-like structure Ni75Cu25O bimetallic oxide with ultra-high electrochemical properties have been obtained, which used Al65Cu15Ni20 precursors through a dealumination strategy. Meanwhile, three-dimensional micro–nanorods-like structure Ni75Cu25O demonstrates an unusual extraordinary specific capacitance (16.96 F cm−2 at 10 mV s−1) and excellent cycling stability (100.8% retention after 5000 cycles at 10 mV s−1). Here, the transition bimetallic oxides by using the dealloying strategy can be applied to develop novel guidances and ideas for the generation of energy storage devices.