Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.081
Publication date: 16th December 2024
The stability of electrode materials in aqueous electrolytes is crucial for the longevity and efficiency of energy storage systems, especially under conditions that promote water electrolysis. This study examines the self-discharge characteristics of polyimide (PI)-based electrodes in aqueous environments. By systematically examining key factors such as electrolyte type, concentration, operational parameters, and environmental conditions, we aim to identify the underlying causes and elucidate the mechanisms driving self-discharge in organic polymer electrodes. Our findings reveal that water reduction at the electrode not only contributes to reversible self-discharge but also significantly influences irreversible capacity loss. Comparison with nonaqueous systems highlight the pronounced sensitivity of organic electrodes to even minimal water content, which exacerbates degradation. These observations underscore the urgent need for strategies to mitigate both reversible and irreversible degradation processes in aqueous battery systems. Our presentation will discuss these phenomena and potential mitigation strategies in detail, offering new perspectives on enhancing the stability and performance of organic electrodes in aqueous conditions.
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