Recent progress of Prussian blue analogues as cathode materials for nonaqueous sodium-ion batteries

The urgent market demand of energy storage and conversion has promoted the extensive investigations of coordination polymers. As a kind of simple cyano-bridged coordination polymers, Prussian blue (PB) and Prussian blue analogues (PBAs) have been considered as the promising cathode materials in sodium-ion batteries (SIBs) because of their 3D open framework, adjustable structure and chemical com-position. Currently, the fundamental research and commercial exploration of PB and PBAs in nonaqueous SIBs are making robust progress. This review summarizes the recent advance and systematical cognition of PB and PBAs, mainly discussing the chemical composition and structure, material synthesis, modifica-tion strategy and sodium storage mechanism in nonaqueous SIBs. The structure-properties relationship of PB and PBAs is deeply revealed from the respects of bulk phase and interfacial stability. Moreover, the issues and perspectives are also analyzed to promote the future scientific research and commercial appli-cation for PB and PBAs cathode in nonaqueous SIBs.(c) 2022 Elsevier B.V. All rights reserved.

Automated summary

The urgent market demand for energy storage and conversion has led to extensive investigations into coordination polymers. Prussian blue and Prussian blue analogues have emerged as promising cathode materials for sodium-ion batteries due to their 3D open framework, adjustable structure, and chemical composition. This review summarizes recent advancements and systematic understanding of Prussian blue and Prussian blue analogues in nonaqueous sodium-ion batteries, including their chemical composition, structure, material synthesis, modification strategy, and sodium storage mechanism. The review also discusses the structure-properties relationship, bulk phase, and interfacial stability of these materials, while identifying potential issues and future perspectives for scientific research and commercial applications of Prussian blue and Prussian blue analogues as cathode materials in nonaqueous sodium-ion batteries.