Ligand Field Electronic State Regulation of Monoclinic Prussian White Toward Highly Stable Sodium‐Ion Batteries

octahedron in NLS2-PW is reduced significantly, and the tetragonal phase transition caused by the Jahn-Teller effect during the electrochemical process is also effectively suppressed. This work demonstrates an efficient modulation strategy to enhance the performance of the Prussian blue analog cathode of sodium-ion batteries, being favorable for the design and optimization of relevant PB analogues for SIB applications.