Fabrication of three-dimensional WO3 nanotube bundles on carbon cloth as a binder-free electrode for high-performance supercapacitors

Abstract

Three-dimensional (3D) nanostructure materials exhibit great electrochemical performance in supercapacitors. Here, 3D WO₃ nanotube bundles were fabricated on carbon cloth, showing a large specific capacitance of 743 F g⁻¹ at 1 A g⁻¹ and superior stability with the capacity retention of about 95% after 5000 cycles. The excellent electrochemical performance stems from the self-supported electrode, unique 3D structure, and special tube-like morphology.