Nanoarchitechtonic Marvels: Pioneering One-Pot Synthesis of Bi<sub>2</sub>WO<sub>6</sub> Nanostructures for Breakthrough in Symmetric Supercapacitor Innovation
M. Karnan, Kittima Lolupiman, Manunya Okhawilai, Prasit Pattananuwat, Manjunath Shetty, Sandhya Venkateshalu, Jun Song Chen, Peng Tan, Jiaqian Qin
Abstract
High Resolution Image Download MS PowerPoint Slide A facile ultrasonic-assisted synthesis (UAS) technique was employed to synthesize bare (BWO-Bare) and heat-treated 600 °C Bi 2 WO 6 nanostructures (BWO-600), which serve as an affordable and ecofriendly supercapacitor electrode material. Extensive structural, morphological, and electrochemical investigations on BWO-600 revealed homogeneous dispersion, exhibiting a remarkable specific capacity of 614 C/g (6 M aqueous KOH electrolyte) in a three-electrode configuration and 376 C/g when assembled as a symmetric supercapacitor. BWO-600 exhibited impressive cyclic stability with a capacitance retention of 84% after 10,000 cycles in 6 M KOH. According to the Dunn and Trasatti analytical method, BWO-600 exhibits an 82% diffusive contribution and an 18% capacitive contribution at a relatively low scan rate. The BWO-600 symmetric supercapacitor demonstrates its effectiveness across diverse electrochemical applications with a remarkable peak energy density of 20.8 Wh/kg and power density of 4.1 kW/kg.