ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Comparative investigation of supercapacitor performance in DMF/PVDF blends: electrospinning-assisted coating, spray coating, and slurry deposition techniques

Inci Unlu, Fatma Kilic Dokan, Rifat Battaloglu, and Ertugrul Sahmetlioglu

Department of Chemistry, Science Faculty, Niğde Ömer Halisdemir University, Niğde, Turkey

E-mail: inci.unlu@ohu.edu.tr

Received: 17 November 2025  Accepted: 4 January 2026

Abstract:

Polyvinylidene fluoride (PVDF) combined with N,N-dimethylformamide (DMF) is a promising material for supercapacitor electrodes due to its chemical stability and favorable electrochemical properties. In this study, electrospinning-assisted coating, spray coating, and slurry deposition were comparatively evaluated for DMF/PVDF-based electrodes. Spray-coated PVDF electrodes exhibited the highest specific capacitance (588.56 F g⁻¹ at 1 A g⁻¹) but poor cycling stability (13.39% retention after 10,000 cycles at 20 A g⁻¹). Slurry-deposited electrodes showed balanced performance with 476.9 F g⁻¹ at 1 A g⁻¹ and 52.85% retention after 500 cycles at 10 A g⁻¹. Electrospinning-coated PVDF electrodes delivered lower capacitance (154.48 F g⁻¹ at 1 A g⁻¹) while maintaining moderate stability (48.07% retention after 10,000 cycles at 15 A g⁻¹). These results demonstrate that the electrode fabrication technique plays a decisive role in optimizing the electrochemical performance and durability of PVDF-based supercapacitor electrodes.

Keywords: Supercapacitors; PVDF-based electrodes; Electrospinning-assisted coating; Polymer-based electrode coatings; Electrochemical performance

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-026-04651-6

Chemical Papers 80 (4) 3801–3812 (2026)