Electrode Materials of Sodium-Ion Batteries toward Practical Application

Advances in developing affordable batteries are vital for integrating renewable and environmentally friendly energy sources into the power grid. Benefiting from the abundance of sodium resources, sodium-ion batteries (SIBs) have attracted great attention as one of the most promising energy storage and conversion devices for grid-scale energy storage systems. From this perspective, we present a succinct and critical survey of the emerging electrode materials, such as layered transition-metal oxides, polyanionic compounds, Prussian blue analogue cathode materials, and hard carbon anode materials, that have potential value for large-scale applications.