Enhanced Supercapacitor Performance of Polyindole Nanocomposites via Optimized 2D SnS2 Nanosheet Integration: Structural, Optical, and Electrochemical Investigations

BEYAZAY E., GÜVEN ÖZDEMİR Z., KARABUL Y.

Journal of Applied Polymer Science, vol.143, no.4, 2026 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 143 Issue: 4
  • Publication Date: 2026
  • Doi Number: 10.1002/app.58096
  • Journal Name: Journal of Applied Polymer Science
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Applied Science & Technology Source, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: batteries and fuel cells, conducting polymers, nanoparticles, nanowires and nanocrystals
  • Yıldız Technical University Affiliated: Yes

Abstract

This study addresses the growing demand for sustainable energy storage by developing high-performance supercapacitor electrodes based on polyindole (PIn) nanocomposites integrated with 2D SnS2 nanosheets. Using cost-effective and scalable hydrothermal and chemical oxidative polymerization methods, the electrodes were fabricated via spin coating. Structural (XRD, FE-SEM, and SEM), optical (UV–Vis), and electrochemical (CV, GCD) analyses reveal that the 3% SnS2-doped composite exhibits a specific capacitance of 188 F/g and an energy density of 25.04 Wh/kg, outperforming pure PIn and many previously reported PIn-based systems. The layered morphology of SnS2 enhances ion transport and faradaic activity, making this composite a promising candidate for environmentally friendly hybrid energy storage applications.