Synthesis of 3-dimensional interconnected porous Na3V2(PO4)3@C composite as a high-performance dual electrode for Na-ion batteries

Three-dimensional (3-D) interconnected porous Na3V2(PO4)3 coated with carbon ([email protected]) is synthesised by a simple modified sol-gel method. When 15 wt% glucose is used as the carbon precursor, the obtained [email protected] composite exhibits excellent electrochemical performance as a cathode as well as an anode for sodium-ion batteries (SIBs). As a cathode, the [email protected] electrode delivers a high capacity of 116.9 mAh g−1 at a...