Redox flow batteries (RFBs) are emerging as a promising solution for large-scale energy storage, particularly for integrating intermittent renewable energy sources like wind and solar. This review aims to provide a comprehensive overview of the current state and future perspectives of metal-based RFBs. The article highlights the key components of RFB systems, including cell components, various types, and current trends, while also addressing the challenges and mitigation strategies associated with their development. The focus is on metal-based RFBs, with a detailed analysis of membrane materials, bipolar plates, and other critical components. Membrane materials, such as ion exchange membranes (IEMs), porous separators, and composite membranes, are discussed in detail, emphasizing their properties and performance. Bipolar plates, which play a crucial role in connecting and separating cells, are also reviewed, considering their materials, advantages, and limitations. The review concludes by discussing the potential of RFBs in various applications, including large-scale energy storage, electric vehicles, and power grid stabilization, and outlines the ongoing research efforts to improve their efficiency, longevity, and cost-effectiveness.Redox flow batteries (RFBs) are emerging as a promising solution for large-scale energy storage, particularly for integrating intermittent renewable energy sources like wind and solar. This review aims to provide a comprehensive overview of the current state and future perspectives of metal-based RFBs. The article highlights the key components of RFB systems, including cell components, various types, and current trends, while also addressing the challenges and mitigation strategies associated with their development. The focus is on metal-based RFBs, with a detailed analysis of membrane materials, bipolar plates, and other critical components. Membrane materials, such as ion exchange membranes (IEMs), porous separators, and composite membranes, are discussed in detail, emphasizing their properties and performance. Bipolar plates, which play a crucial role in connecting and separating cells, are also reviewed, considering their materials, advantages, and limitations. The review concludes by discussing the potential of RFBs in various applications, including large-scale energy storage, electric vehicles, and power grid stabilization, and outlines the ongoing research efforts to improve their efficiency, longevity, and cost-effectiveness.