Hierarchical Carbon Framework Wrapped Na 3 V 2 (PO 4 ) 3 as a Superior High‐Rate and Extended Lifespan Cathode for Sodium‐Ion Batteries

Hierarchical carbon framework wrapped Na3V2(PO4)3 (HCF-NVP) is successfully synthesized through chemical vapor deposition on pure Na3V2(PO4)3 particles. Electrochemical experiments show that the HCF-NVP electrode can deliver a large reversible capacity (115 mA h g−1 at 0.2 C), superior high-rate rate capability (38 mA h g−1 at 500 C), and ultra-long cycling stability (54% capacity retention after 20 000 cycles). As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than…

• NN
  National Natural Science Foundation of China

  Awards: 21333007, 21373155
• NK
  National Key Research and Development Program of China