High mass loading Ni4Co1-OH@CuO core-shell nanowire arrays obtained by electrochemical reconstruction for alkaline energy storage

The design of three-dimensional (3D) core-shell heterostructures is an efficient method to achieve high mass specific capacity of electroactive materials under high mass loading. In this work, porous Ni4Co1-OH nanosheets with a mass loading of 7.7 mg·cm−2 are obtained by using Ni4Co1-(NO3)2(OH)4 supported on the CuO nanowires as precursors via an unavoidable electrochemically induced phase reconstruction. During the electrochemical...