Yingkai Hua

Abstract Click to copy section linkSection link copied! Anions generally constitute the structural framework of crystalline solids, making their extensive substitution, particularly for the formation of anionic solid solutions in polyanionic compounds, highly challenging.

1 Introduction Sodium-ion batteries (SIBs) have garnered significant interest as a promising alternative to lithium-ion batteries, primarily due to the high abundance and low cost of sodium resources.[1] The performance of SIBs is heavily dependent on the choice of cathode materials, which include transition-metal layered oxides,[2] Prussian blue analogues,[3] and polyanionic compounds.[4] Among these, polyanionic compounds are particularly noteworthy for their excellent structural stability...