A uniform dendritic NiCo2S4@NiCo2S4 hierarchical nanostructure of width approximate to 100 nm is successfully designed and synthesized. From kinetic analysis of the electrochemical reactions, those electrodes function in rechargeable alkaline batteries (RABs). The dendritic structure exhibited by the electrodes has a high discharge-specific capacity of 4.43 mAh cm(-2) at a high current density of 240 mA cm(-2) with a good rate capability of 70.1% after increasing the current densities from 40 to 240 mA cm(-2). At low scan rate of 0.5 mV s(-1) in cyclic voltammetry test, the semidiffusion controlled electrochemical reaction contributes approximate to 92% of the total capacity, this value decreases to approximate to 43% at a high scan rate of 20 mV s(-1). These results enable a detailed analysis of the reaction mechanism for RABs and suggest design concepts for new electrode materials.