We demonstrate a novel and efficient approach to fabricate reduced graphene oxide (RGO)/MnOx@carbon hollow nanospheres (HCNs) nanohybrids for high performance supercapacitor application. Mn2+ ions can bind with negatively charged O atoms on graphene oxide (GO) via electrostatic forces to generate RGO/MnOx (x <= 2) under hydrothermal condition. This process was utilized to grow MnOx layers on the surfaces of RGO, and the RGO/MnOx was encapsulated within the outer carbon shell to obtain RGO/MnOx@HCNs. RGO/MnOx@HCNs have a regular hollow structure with uniform outer shells (similar to 10 nm) and inner spherical pores (similar to 150 nm), high surface areas (493668 m2 g-1), and high contents of MnO2 (12.219.6 wt%). As-designed ternary coreshell 3D nanoarchitecture prevents the leaching of loaded manganese oxides and avoids the aggregation of RGO within the carbon shell, which effectively guarantees the electrochemical activity of each electroactive components. Consequently, a typical RGO/MnOx@HCNs as a supercapacitor electrode exhibits a high specific capacitance (355 and 270 F g(-1) in a three-electrode and two-electrode system at 1.0 A g(-1), respectively) in 6 M KOH electrolyte. Besides, the electrode shows a high rate chargedischarge capability (20.0 A g(-1)), and good electrochemical stability (88% capacitance retention after 5000 cycles at 0.5 A g(-1)). The results suggest that the coreshell RGO/MnOx@HCNs nanostructures provide promising prospects for electrochemical energy storage applications. (C) 2016 Elsevier B.V. All rights reserved.