LAUSR

Abstract The NiCo hydroxides nanosheets (NiCo–OH) decorated Cu(OH)2 nanotubes structure was fabricated via a facile solution-immersion and later solvothermal method. The internal 1D Cu(OH)2 nanotubes directly grown on current collector without binder using enhance conductivity, accelerating electron transport. The outer 2D NiCo–OH nanosheets provide large surface areas and considerable active sites, promoting the electrode/electrolyte contact. Beneficial from significant electrochemical synergy in conductivity and open structure, the Cu(OH)2@NiCo–OH exhibits an impressive capacity of 1.12 mAh cm−2 at 3 ​mA ​cm−2, and remarkable rate capability (71% capacity retention at 30 ​mA ​cm−2). When assembled Ni–Zn battery with Cu(OH)2@NiCo–OH as cathode and Zn plate as anode, the Cu(OH)2@NiCo–OH//Zn battery displays high energy density and power density (1.53 ​mWh cm−2, 31.6 ​mW ​cm−2). Therefore, the Cu(OH)2@NiCo–OH//Zn battery presents a tremendous charm in new-type energy-storage devices.