In this work, an interwoven nanoscale structure of Ni(OH) 2 and copper is successfully grown on Ni foam (NF) by using a one-step cheap chemical method. ) and outstanding cycling stability (98.5% capacitance retention after being charged/discharged at a series of current densities for 3500 cycles). Furthermore, the full cell, with Ni(OH) 2 -Cu/NF as the positive electrode and reduced graphene oxide (RGO) as the negative electrode, delivers high areal capacitances and superior energy densities especially at high rates. The involved mechanisms are analyzed and discussed.