Flow field design and performance analysis of vanadium redox flow battery

Vanadium redox flow batteries (VRFBs) are one of the emerging energy storage techniques that have been developed with the purpose of effectively storing renewable energy. Due to the lower energy density, it limits its promotion and application. A flow channel is a significant factor determining the performance of VRFBs. Performance excellent flow field to ensure uniform distribution of electrolytes and increases the overall performance of the battery. In order to better explore the influence of the flow field on the transmission characteristics of the electrolyte, novel variable cross-section flow field is designed to analyze its impact on battery performance. The influence of flow field with and without flow field, different flow field configurations, and variable cross-section on battery performance was analyzed emphatically. The main contribution of this study are to make a comparative analysis of the existing channel design methods and analyze the advantages and disadvantages of different design methods and existing problems. It provides reference for the design and optimization of VRFBs in the future.