Synthesis of CoSe2 reinforced nitrogen-doped carbon composites as advanced anodes for potassium-ion batteries

Owing to the synergistic effect of CoSe 2 and N-doped carbon matrix, a composite of CoSe 2 nanoparticles dispersed in polydopamine-derived N-doped carbon matrix exhibits high specific capacity and excellent cyclability as potassium-ion battery anode.