Co metal nanoparticles incorporated three-dimensional mesoporous graphene nanohybrids for electrochemical hydrogen storage

Cobalt metal nanoparticles incorporated mesoporous graphene nanohybrids were successfully synthesized. Co metal nanoparticles were homogeneously dispersed and immobilized on the surface of the host MG with sizes of 5 nm. The optimal condition for hydrogen storage material is Co-MG-45, which has both high discharge capacity (250 mAh g−1) and good cycle stability (80% after 20 cycle), caused by the synergetic effect of the MG and Co metal nanoparticles.200