Electrospun Fabric Tin Oxide 1‐D Nanofibers: Approach Towards Flexible Electrode for Supercapacitor Application

• Published in: ChemistrySelect (Weinheim) 2023-04, Vol.8 (13), p.n/a
• Main Authors: Molane, Avinash C., Gavande, Shivani S., Nimbalkar, Tanaji M., Salunkhe, Amol S., More, Pravin D., Patil, Vikas B.
• Format: Article
• Language: English
• Subjects: Electrospinning; Flexible electrode; Nanofibers; SEM; SnO2
• ISSN: 2365-6549; 2365-6549
• DOI: 10.1002/slct.202205042

Herein, the facile electrospinning route is demonstrated to fabricate nanofibrous based tin oxide flexible electrode processed at different annealing temperatures and further envisaged in high‐performance energy storage application. Tin oxide (SnO2) processed at 400 °C of annealing temperature showcased excellent specific capacitance (844 F/g) along with interfacial capacitance (0.1434 F/cm2) at 1 mV/s of scan rate which was tested in 1 M NaOH aqueous electrolyte and exhibited remarkable stability even after 2000 cycles. Nanofibers with beads‐formation type morphology of the electrodes were confirmed through scanning electron microscopy. Hydrophilic nature of the electrode surface was confirmed by water contact angle measurements. The structural study was done with the help of X‐ray diffraction (XRD), Raman spectroscopy, Energy dispersive X‐ray analysis (EDAX) and X‐ ray photoelectron spectroscopy (XPS). In addition, the flexible symmetric supercapacitor device is believed to have an excellent flexibility and electrochemical stability during mechanical bending up to 180°, suggesting SnO2 as promising electrode material for applications in future flexible and wearable electronics devices. Flexible Tin oxide nanofiberous electrode has been developed by electrospinning route. The structure and morphology of the electrode was envisaged by XRD, Raman, XPS, SEM and EDAX techniques.The optimized flexible electrode showed excellent specific capacitance of 844 F/g and interfacial capacitance of 0.1434 F/cm2 at 1 mV/s scan rate in 1 M NaOH aqueous electrolyte.The flexible symmetric supercapacitor device exhibits 9.11 Wh/kg specific energy and 15.68 kW/kg specific power at 0.8 mA/cm2 current density.