Supporting data for manuscript: Eco-Friendly Supercapacitor Architecture Based on Cotton Textile Waste and Biopolymer-Based Electrodes

This dataset contains the supporting data for the manuscript entitled “Eco-Friendly Supercapacitor Architecture Based on Cotton Textile Waste and Biopolymer-Based Electrodes.” The package includes: (i) TGA/DTG data (H-1, H-2), (ii) ATR-FTIR spectra (H-1, H-2, and H-2 after cycling), and (iii) electrochemical measurements for hydrogels and devices SC-1 and SC-2, including EIS, CV (10–50 mV s⁻¹), GCD at multiple currents, and cycling-related data. A README file is included to describe the folder structure, file naming, and typical data columns/units.