Reactive Template Synthesis of Inorganic/Organic VO2@Polyaniline Coaxial Nanobelts for High-Performance Supercapacitors

Graphical Belt and braces : Inorganic/organic VO 2 @PANi coaxial nanobelts are prepared for the first time by using a simple and facile reactive template strategy without the assistance of any surfactant for high-performance supercapacitor electrodes in neutral electrolyte. Conducting polyaniline (PANi) is deposited in situ as a homogeneous shell on the monocrystalline VO 2 nanobelts by using a simple and facile reactive template strategy without the assistance of any surfactant for supercapacitor electrodes. The as-prepared VO 2 @PANi coaxial heterostructures show larger specific capacitance, better rate capability than the bare VO 2 nanobelts, and higher cycling stability than the HCl-doped PANi nanofibers in neutral electrolyte, owing to the synergetic contributions of the unique configuration and composition. These intriguing results can be extended to the synthesis of core/yolk-shell or hollow inorganic/organic functional nanostructures with various shapes by tuning the pH or reaction time, which have potential applications in energy storage, optoelectronic devices, environmental governance, and catalysis.