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Heterostructure construction is an efficient method for reinforcing K+ storage of transition metal selenides. The spontaneously developed internal electric fields give a strong boost to charge transport and significantly reduce the activation energy. Nevertheless, perfection of the interfacial region based on the energy level gradient and lattice matching degree is still a great challenge. Herein,...
Potassium‐Ion Batteries
Controlling the crystal orientation allows an effective way to modify the electrical properties of a heterojunction. By engineering the heterointerfaces, rich vacancies and ultrafine CoSe2–FeSe2 heterojunctions with semicoherent phase boundary are simultaneously obtained by Jian Qin, Xifei Li, and co‐workers, which highly boosts potassium‐ion storage, as reported in article...
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