Journal of Chemistry and Chemical Research

As a new - type energy storage device, the Redox Flow Battery (RFB) has received extensive attention in the field of large - scale energy storage. The degradation products of the electrolyte may affect its performance and stability. Therefore, it is of great significance to on - line monitor the changes of electrolyte degradation products. In this study, a new on - line mass spectrometry monitoring method was developed to real - time detect the degradation products of the electrolyte in the redox flow battery. This method combines high - sensitivity mass spectrometry technology with the working environment of the flow battery, providing a powerful technical support for battery performance optimization. The experimental results show that this monitoring method can accurately track the concentration changes of degradation products in the electrolyte, revealing the relationship between them and the cycle stability of the battery. The innovation of this study lies in the first realization of on - line mass spectrometry monitoring of the degradation products of redox flow battery electrolyte, and providing a feasible technical path for the performance improvement of future battery systems.

Redox flow battery; Electrolyte degradation products; On - line mass spectrometry monitoring; Energy storage; Performance