A three-dimensional Ni(OH)(2)/Cu2O/CuO porous cluster was designed and directly grown on nickel foam (NF) through a facile, eco-friendly, one-step hydrothermal assistant redox reaction of NF with Cu(NO3)(2) in the KOH solution, in which NF acted as both a reductant and Ni source. It exhibited improved rate capability and excellent specific capacitance, i.e. high capability (1474 Fg(-1) at 15 mA cm(-2)), high cycling stability (82% retention after 1,500 cycles), and good rate capacitance (54% capacity remaining at 100 mA cm(-2)). The good electrochemical performance was due to the unique structure and components of it. The NF not only acted as a substrate for Ni(OH)(2)/CuO to germinate on and improved its electrical conductivity, but also introduced a new Cu2O phase to the composite. The inserted high reversible redox couple CuO/Cu2O enhanced the cycle performance of composite. The simple accessibility and ingenious design of this three-dimensional Ni(OH)(2)/Cu2O/CuO porous cluster proved that this was a promising method to obtain super supercapacitor electrode materials. (C) 2016 Elsevier Ltd. All rights reserved.