Speaker
Description
Bismuth oxychloride (BiOCl) is a promising electrode material for energy storage due to its layered structure and redox activity; however, its low intrinsic electrical conductivity and pronounced potential drop limit practical performance. In this work, a conducting polymer–based modification strategy is anticipated, in which polypyrrole (PPy) is incorporated into BiOCl to enhance charge-transfer kinetics and suppress the potential (IR) drop during electrochemical operation. 3D porous PPy–BiOCl hybrid electrodes with varying PPy contents (5, 7, and 9 wt.%) were prepared via a simple physical blending technique. Field emission scanning electron microscopy analysis confirms a uniformly distributed 3D porous architecture with a large accessible surface area, facilitating efficient ion transport and electrochemical activity. The BP1 electrode (5 wt.% PPy) supported on nickel foam exhibited pronounced redox peaks in 6 M KOH, indicating a dominant battery-type faradaic charge-storage mechanism. Due to enhanced electronic conductivity and an oxygen-vacancy-enriched hybrid structure, the BP1 electrode exhibited a lower potential drop. It delivered a high specific capacity of 659 C.g⁻¹ at 1.0 A.g⁻¹. A BP1//BP1 symmetric supercapacitor achieved an energy density of 24.0 Wh.kg⁻¹ at a power density of 750.0 W.kg⁻¹. Furthermore, two symmetric devices connected in series successfully powered green and red light-emitting diodes, demonstrating the practical viability of PPy-modified BiOCl hybrid electrodes.
| Apply for student award at which level: | PhD |
|---|---|
| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |