Tin oxide coated molybdenum oxide nanowires (SnO 2 /MoO 3 ) are synthesized by a combination of hydrothermal and wet chemical routes. The electrochemical capacitance properties of the SnO 2 /MoO 3 core shell composite nanowires are measured by cyclic voltammetry (CV) and galvanostatic charge–discharge method in 1M Na 2 SO 4 aqueous solutions. The results showed that specific capacitance of SnO 2 /MoO 3 core shell composite nanowires is 295Fg −1 , which is much higher than the specific capacitance of pure individual MoO 3 (69Fg −1 ) and SnO 2 (96.6Fg −1 ). Moreover the synthesized core shell composite nanowires has also exhibited excellent long-term cycling stability (only 3% loss of its initial specific capacitance after 1000 cycles) which may lead to its multifarious usage in high-performance energy storage devices for future potential applications.