Supercapacitive Performance of Modified Glassy Carbon Electrodes Using Hydrothermally Grown Ti Doped Wo3 Nanoflakes

The demand for high-performance energy storage devices such as supercapacitors and lithium-ion batteries has been increasing to meet the application requirements of renewable energy systems. Here, high energy and power density Ti doped WO 3 supercapacitor is reported based on the modified glassy carbon electrode. The morphology, crystallinity, and chemical state of WO 3 nanostrutcures were investigated by high resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). Moreover, the supercapacitive properties of pure and Ti doped WO 3 nanostructures were examined. Ti doped WO 3 supercapacitor operated at voltage 0.8 V and achieved a high energy density of 182Wh -1 kg at a power density of 170W kg -1 . Furthermore, the supercapacitor device showed an excellent cycling performance with capacitance retention of 83% even after 1100 th cycles