Hollow Mesoporous Co(PO3)2@Carbon Polyhedra as High Performance Anode Materials for Lithium Ion Batteries

The hollow mesoporous Co(PO3)2@carbon nanocomposite (H–Co(PO3)2@C) was synthesized using ZIF-67 as the template by a facile one-step thermal decomposition reaction. As an anode for lithium ion batteries, its reversible capacity remains up to 601 mAh g–1 at 1 C after 500 cycles. Such a high reversible capacity along with the excellent rate capability and long-term cycling stability benefits from the hollow mesoporous structure and uniform carbon framework encapsulated active nanocrystals. These results render the as-prepared H–Co(PO3)2@C to be a promising anode material for high performance lithium ion batteries.