MoP@C nanocomposite, combined three-dimensional (3D) honeycomb carbon matrix with molybdenum phosphide, was synthesized through a simple hard template method followed by high-temperature phosphating treatment. The MoP@C has shown excellent sodium and potassium-ion storage properties applied as anode materials for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). The MoP@C composite maintains a high reversible specific capacity of 250 mAh g−1 in SIBs after 100 cycles at 0.5 A g−1. Furthermore, even at a high current density of 5 A g−1, it still delivers a specific capacity of 200.5 mAh g−1. Additionally, the nanocomposite holds 147.2 mAh g−1 at a high current density of 1 A g−1 in PIBs. The excellent electrochemical performance benefits from the synergistic effect of the hierarchical MoP@C nanostructure. The exquisite porous nano-frame with higher conductivity and larger specific surface area, the active substance is fully infiltrated in the electrolyte, and su
Potassium-ion (K-ion) batteries are gaining more attention as a promising substitute to lithium-ion batteries (LIBs) in large electrical energy storage.