Abstract: The high specific capacity with high rate characteristic graphite anode was synthesized by nitrogen doping and secondary particle bonding technologies. The reversible capacity of the obtained graphite was 359.8mAh/g. The full pouch cells with the minimal energy density of 230Wh/Kg (650Wh/L) were assembled to evaluate the electrical performance. The charging capacity can research 51% within 10 minutes, and 100% within 30 minutes, demonstrating an excellent fast charging characteristics. The fast charge cycle test with 3C-rate charge and 1C-rate discharge was conducted at room temperature. It shows that even after 1000 cycles, there is still 88% of the initial capacity, and the maximum swelling rate is 10.1%, which can meet the demand of most electron devices and electric vehicles.

Key words: N doped graphite, secondary particle, fast charge, high specific capacity