The nitrogen doped mesoporous carbon was prepared by convenient process of mixing, carbonization and template removal, using the phenol formaldehyde resin as the raw material, the silicon dioxide as the template and urea as the nitrogen source.The pore structure and chemical composition of as-prepared N-doped mesoporous carbons were characterized by transmission electron microscopy(TEM), N_2 physical adsorption technology,and IR analysis. The supercapacitor performances of the products were tested by cyclic...