Research progress on prussian blue analogues for sodium-ion batteries
Nowadays,the world is facing a growing energy crisis and serious environmental problems,the development and utilization of sustainable renewable energy resources are extremely urgent.Among the various electrochemical energy storage technologies,accelerating the development of sodium-ion batteries,which exhibit the advantages of abundant resources,low raw material costs,good safety performance,and excellent low-temperature performance,is considered as an effective way to solve the resource limitation of lithium-ion batteries.Prussian blue analogues have become one of the most promising cathode materials for sodium-ion batteries because of their abundant sodium storage sites and high specific capacity,but the lattice vacancy defects and the existence of crystal water during the synthesis process adversely affect the electrochemical performance of the materials.This article mainly introduces the Prussian blue analogues used as cathode materials for sodium-ion batteries,summarizes and analyzes their structural properties,main types,synthetic routes and modification methods,reviews the research focus and progress of Prussian blue analogues,and lastly puts forward analysis and outlook for their future large-scale industrialization and practical application.
sodium-ion batteriesPrussian blue analoguescathode materials
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