The
hierarchically porous iron phosphide nanospindles with nitrogen–phosphorus-codoped
carbon coatings (FeP@NPC) are fabricated via a combination
of hydrothermal synthesis and subsequent phosphating treatment, which
is extensively researched for elevating the outstanding performance
of lithium-ion batteries (LIBs). The as-prepared FeP@NPC nanocomposite
manifests a distinguished specific capacity of 1100 mA h g–1 after 200 cycles at 0.2 A g–1, a ranking rate
performance with a high capacity of ∼600 mA h g–1 at 5 A g–1, and a reversible long cycling capacity
of 951.7 mA h g–1 after 800 cycles at 1 A g–1. The superior properties can be ascribed to the joint
contribution of the well-designed porous nanostructure and conductive
N, P-codoped carbon coating, which simultaneously facilitates efficient
transmission of lithium ions and electrons, contributes to mild volume
expansion, and elevates structural stability during the reversible
charge–discharge process.