Regulation of solvation structure and the cooperation environment of potassium bonds for wider‐temperature adaptive potassium storage

Abstract Antimony selenide (Sb 2 Se 3 ) is one of the perspective candidates for potassium‐ion batteries due to its advanced virtues stem including featured high capacity, fertile reserves and the relative narrow band gap. Despite the unique advantages, it is still plagued by the unstable interface compatibility and poor wider‐temperature adaptability. The optimization of microstructure and the construction of inorganic‐organic hybrids with a low desolvation barrier and rapid kinetics behaviors are efficient to address these issues. The Sb 2 Se 3 nanorods enclosed by the S‐doped carbon layer (SC), further crosslinked by the poly( N ‐isopropylacrylamide) (PM) film (PM@Sb 2 Se 3 @SC), were artificially fabricated, and it displays the enrichment ion aggregated model as well as contacted ion pair state, the well‐tailored cooperation environment of potassium bonds, assuring a homogeneous potassium deposition and an excellent wider‐temperature adaptability. The complicated experimental studies and theoretical calculations authenticate the synergistic effects of geometric conformation and compositional design for the tremendously enhanced potassium storage. Moreover, the full device over PM@Sb 2 Se 3 @SC anode and the potassium Prussian blue cathode manifests impressively durable cycling life and wider‐temperature adaptability, verifying the glorious contribution from the finely manipulation in solvation structure and potassium bonds to enhancing the potassium storage behaviors.