| abstract |
The invention relates to a porous carbon material for a lithium air cell. The porous carbon material is a metal-doped nitrogen-containing porous carbon material, is prepared through a one-step hard template process, has the specific surface area of 500-2000 m<2>*g<-1> and the total pore volume of 0.8-5 cm<3>*g<-1>, the mesopore volume accounts for 50-90% of the total pore volume, the metal atom content is 0.5-5 wt.%, and the nitrogen atom content is 1-10 wt.%. Nitrogen atom and metal atoms, which are introduced in the forms of a nitrogen-containing carbon source and a metal salt solution, have catalytic effect, more active sites are provided in the charging/discharging process of the lithium air cell, the charge transfer impedance is effectively reduced, and the voltage of a discharge plateau is improved. |