Slurry Flow Electrodes: A Pathway to Scalable and Sustainable Energy Solution

ABSTRACT Efficient and scalable electrochemical energy storage devices are crucial for the global transition to renewable energy. The decoupling of energy and power densities has extended the operational life and continuous operation capabilities of slurry flow electrodes (SFEs), making them a potential solution. This study comprehensively examines the design principles, rheological behavior, electrochemical performance, and prospective applications of SFE systems across diverse domains, including grid‐scale energy storage, capacitive deionization, and hydrogen storage. Thorough literature research was conducted in conjunction with an examination of current experimental advances, including the use of carbon foam and aqueous slurries based on multi‐walled carbon nanotubes. This current work highlights the synergistic role of novel materials, optimized flow field architectures, and externally applied magnetic fields in addressing persistent challenges, including excessive viscosity, particle agglomeration, and limited electronic conductivity. Furthermore, the study evaluates recent developments in both membrane‐based and membrane‐less SFE configurations, emphasizing their roles in flow‐electrode capacitive deionization and lithium slurry battery systems.