In this study, dendritic Co@Cu is prepared to illustrate a facile strategy to acquire bimetallic dendritic core-shell structure. The core and shell metals are both obtained by electrochemical crystal growth process. The leading parameter, overpotential, endows inner core dendritic shape by surpassing the critical value. Meanwhile, it also determines Cu shell morphology from flat surface to dendritic structure by adopting different value. The Cu dendrite on Co dendritic core constructs a super-dendrite, which is regarded as a higher class of hierarchical structure. Sophisticated techniques such as field-emission scanning electron microscopy, energy dispersive spectroscopy and X-ray powder diffraction are devoted to reveal the external morphology of the as-obtained material and verify the core-shell characteristic. (c) 2012 Elsevier Ltd. All rights reserved.