ENHANCING REGENERATION SYSTEM CYCLIC STABILITY FOR ALL-IRON FLOW BATTERIES THROUGH NAFION MEMBRANE MODIFICATION WITH A SILICA NANOLAYER
DOI:
https://doi.org/10.59957/jctm.v60.i5.2025.13Keywords:
Nafion membrane, TEOS, all-iron flow battery, electrolyte regeneration, cyclic stability, catalyst degradation, energy storage, silica nanolayerAbstract
This study investigates the impact of modifying a Nafion N115 membrane with a silica nanolayer created from tetraethoxysilane (TEOS) on the performance and durability of an all-iron flow battery. The research aims to enhance electrolyte regeneration and reduce degradation issues commonly encountered in such systems. Potentiometric analysis and cyclic voltammetry were employed to assess the modified membranes' cyclic stability and electrochemical activity of the catalyst. The results demonstrate that the TEOS-modified membrane significantly improves cyclic stability, extending it to ten cycles, compared to just three cycles for unmodified membranes. Moreover, the modification effectively preserves the electrochemically active surface area of the platinum catalyst, thereby enhancing overall system performance and reducing catalyst degradation. The study concludes that the TEOS-modified Nafion membrane offers a viable solution to improve the durability and efficiency of all-iron flow batteries, making it a promising candidate for long-term energy storage applications.
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