Prussian Blue Analogs as Cathode Materials for Sodium‐Ion Batteries

This article discusses the synthesis and modification strategies for Prussian blue analogs (PBAs), including methods such as coprecipitation, solvothermal, ball milling, and electrodeposition. It further explores various modification techniques, including surface modification, composite engineering, morphology control, and doping, to enhance PBA performance. The commercialization pathway of PBAs is also covered, from the development of advanced cathodes to prototype cells, mass production, and eventual practical utilization.

Prussian blue analogs (PBAs) have shown great promise as cathode materials for sodium-ion batteries (SIBs) due to their easy synthesis, affordability, structural adaptability, and high theoretical capacity. However, despite their considerable potential, there are still several performance challenges that hinder their practical use. This review thoroughly explores the structures of PBAs and their electrochemical reaction mechanisms, systematically summarizing current synthesis methods and modification techniques while providing forward-looking insights. Additionally, the industrial viability of PBAs is assessed from a commercialization standpoint. By examining advanced synthesis methods, material optimization strategies, and challenges in industrial development, this work aims to provide both theoretical guidance and technical prospects for enhancing the application of PBAs in practical SIBs.

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