A vijit Biswal, Bankim Chandra T ripathy
The dual effect of in-situ addition of anionic surfactants, specifically sodium octyl sulfate (SOS), sodium dodecyl sulfate (SDS), and sodium tetradecyl sulfate (STS), on the microstructure and electrochemical properties of electrolytic manganese dioxide (EMD) derived from waste low grade manganese residue is thoroughly analyzed. Utilizing methodologies such as X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), BET surface area studies, thermogravimetry-differential thermal analysis (TG-DTA), and Fourier transform infrared spectroscopy (FTIR), the structure and chemistry of the EMD were determined. The results indicated that all EMD samples predominantly contained γ-phase MnO2, which is known for its electrochemical activity in energy storage applications. FESEM imagery revealed the formation of various nanoparticle morphologies, including needle, rod, and flower-shaped structures in the presence of surfactants, contrasting with platy nanoparticles formed without them. Thermal analyses demonstrated structural stability of the EMD samples, showcasing loss of structural water and formation of lower manganese oxides. Cyclic voltammetry and charge-discharge tests revealed that surfactant inclusion significantly enhances the energy storage capabilities within the MnO2 structure. Notably, the EMD samples with optimum surfactant concentrations exhibited improved surface area and enhanced cycle life compared to those without surfactant, stabilizing a capacity of 95 mAh g−1 across 15 cycles.
@article{c730730d-a680-4bdf-bfb9-f7f060c3b070,
title={Dual Effect of Anionic Surfactants in th},
author={A vijit Biswal and Bankim Chandra T ripathy},
year={2026},
language={en}
}TY - JOUR TI - Dual Effect of Anionic Surfactants in th AU - A vijit Biswal AU - Bankim Chandra T ripathy PY - 2026 LA - en ER -
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