Development Overview and Perspective of Semi‐Solid Flow Batteries

The development of efficient and cost‐effective grid energy storage devices is crucial for advancing the future of renewable energy. Semi‐solid flow batteries, as an emerging energy storage technology, offer significantly higher energy density and lower costs compared to traditional liquid flow batteries. However, the complex interplay between rheology and electrochemistry poses challenges for in‐depth investigation. With a sketch of historical development of semi‐solid flow batteries, this minireview summarizes several key issues, including particle interactions, electron transport, and the sustainability of electrochemical reactions in slurry electrodes. By tracing the technological evolution of semi‐solid flow batteries, we provide a forward‐looking perspective on their potential application in future large‐scale energy storage systems, highlighting their promising role in addressing the challenges of energy transition.