Tin oxide coating on molybdenum oxide nanowires for high performance supercapacitor devices

Tin oxide coated molybdenum oxide nanowires (SnO2/MoO3) are synthesized by a combination of hydrothermal and wet chemical routes. The electrochemical capacitance properties of the SnO2/MoO3 core shell composite nanowires are measured by cyclic voltammetry (CV) and galvanostatic charge-discharge method in 1 M Na2SO4 aqueous solutions. The results showed that specific capacitance of SnO2/MoO3 core shell composite nanowires is 295 F g(-1), which is much higher than the specific capacitance of pure individual MoO3 (69 F g(-1)) and SnO2 (96.6 F g(-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. (C) 2012 Elsevier Ltd. All rights reserved.