Defect rich N doped porous carbon derived from soybean for high rate lithium ion batteries
Abstract Anode materials play a key role in the development of lithium ion batteries. Soybean is a natural, plentiful, renewable and nitrogen rich source, which can be treated into porous carbon with heavy nitrogen doping. The as obtained carbon material can be applied as anode material for lithium ion batteries with promising performance. It can deliver excellent cycling performance (310 mA h g 1 in the 500th at 2 C and 275 mA h g 1 at 4 C after 1000 cycles) The good electrochemical performance could be ascribed to the interconnected porosity with high surface area, the unique graphitic nano crystals, and more importantly, capacitive contributions from its surface nitrogen doping and numerous surface defects.