Impact of Phase Transformation and Oxidation States on the Charge Storage Mechanism of Tin Oxide-Based Energy Storage Materials
S.D. Jadhav, L. Pang, M. Barclay, H. Ponnuru, S.A. Alomari, H. Wang, A.P. O’Mullane, N. Motta
Journal of Alloys and Compounds, Volume 1028, 15 May 2025, 180671
https://doi.org/10.1016/j.jallcom.2025.180671
This study examines how annealing temperature affects the charge storage performance of various SnO₂ phases. Structural analyses revealed phase-dependent differences in crystallite size, oxidation state, and hydration, influencing charge transport. Smaller crystallites showed better electrochemical performance. The best areal capacitance (39 mF/cm²) was achieved at 300°C, with charge storage governed by both surface capacitive and diffusion-controlled mechanisms. These findings advance understanding of SnO₂-based materials for sustainable energy storage.
Congratulations to Sagar and to the team for the great effort and the successful outcome!