Anode materials have limited the development of sodium-ion batteries (SIBs). In this paper, the novel pomegranate-like mesoporous double carbon-coated Fe2P nanoparticles (Fe2P@C@NC), in which Fe2P is confined in the thin carbon shell derived from phytic acid and then wholly embedded into N-doped carbon network, can be applied as anode materials for SIBs. The elaborated structure presents several prominent merits, such as large specific surface area, pore-volume, excellent electronic conductivity network, and buffering volume expansion. All of these endow the structural integrity of Fe2P@C@NC material with excellent performance during charge-discharge cycles and guarantee speedy electrode reaction kinetics. As SIBs anode, Fe2P@C@NC material delivers an excellent reversible specific capacity of 408 mAh g(-1) with almost no decay after the 100th cycles. And it also features excellent rate capability and splendid durability (attenuation rate of 0.05 per cycle with 1000th cycles) at high current density. These results confirm that the unique self-confined growth strategy has a great practical value in synthesizing advanced materials for next-generation energy storage systems. GRAPHICS .
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