Tungsten carbide nanoparticle-encased graphite-like mesoporous carbon(WC/MG), as a precious metalfree cathode catalyst for oxygen reduction reaction, was successfully synthesized by a template replicating-assisted chemical vapor deposition(CVD) method. The obtained mesostructured WC/MG composite possesses high oxygen reduction reaction catalytic activity and stable electrochemical property. InO_2-staturated 0.1 mol/L KOH solution, the half-wave potential(E1/2) and limiting current density of the sample WC/M...