2D Se‐Rich ZnSe/CoSe2@C Heterostructured Composite as Ultrastable Anodes for Alkaline‐Ion Batteries

2D transitional metal selenide heterostructures are promising electrode materials for potassium-ion batteries (PIBs) owing to the large surface area, high mechanical strength, and short diffusion pathways. However, the cycling performance remains a significant challenge, particularly concerning the electrochemical conversion reaction. Herein, 2D Se-rich ZnSe/CoSe