Large-scale Preparation and Electrochemical Characterization of NaTi2(PO4)3/C Composite Nanoparticles As Anode Materials in Sodium Ion Batteries

Materials with NASICON structure, such as NaTi2(PO4)3 (NTP), are widely studied in the field of sodium ion battery. They have potential applications, but their conductivity is poor. Nanostructure can shorten the ion and electron transport paths and make electrolytes permeable easily. Generally speaking, the electric conductivity of battery materials can be improved by adding appropriate amount of carbon. In this paper, large-scale NTP/C nanomaterial of kilogram level was prepared by spray drying. The as-prepared NTP/C nanomaterial shows good electrochemical performance. At 5 C, the initial specific capacity is 69 mA h g–1, and the capacity after 2000 cycles is about 73.2% of the initial capacity.