▎ 摘　　要

Using Pd(en)(2)Cl-2 as the Pd precursor and graphite oxide as the carbon precursor, the Pd(en)(2)(2+) intercalated graphite oxide was synthesized, then it was reduced in solution with NaBH4 and the graphene/Pd nanosized particle composites were obtained. The final graphene composites were characterized by XRD, FE-SEM, TEM, ICP and N-2 adsorption test and their H-2 storage property was also measured. The results show that the composites have a regular mesoporous structure, and Pd particles with a diameter of 2 similar to 6 nm are evenly dispersed between graphene sheets and pillar the graphene sheets to inhibit the accumulation of grapheme sheets. The composites have a high BET surface area and their H-2 storage reaches 3.4 wt% at 77 K and 0.11 MPa.