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Indexed by:会议论文

Date of Publication:2010-07-11

Included Journals:EI、CPCI-S、SCIE

Volume:175

Page Number:275-278

Key Words:Mo(2)C/CNTs; microwave; thermolytic molecular precursor; oxygen reduction reaction

Abstract:Nanostructured Mo(2)C/CNTs has been synthesized by microwave-assisted thermolytic molecular precursor method. Pt nanoparticles were deposited on the as-prepared Mo(2)C/CNTs by using the modified ethylene glycol method. The samples were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The electrocatalytic activity toward ORR was measured through a thin-film rotating disk electrode. The results showed the particles size of Mo(2)C and Pt ranged from 3 to 6 nm. The formation process of Mo(2)C followed the sequence: Mo(CO)(6) -> Mo -> [ Mo,O,C] -> Mo(2)C -> Mo(3)C(2). The Pt-Mo(2)C/CNTs sample possessed higher ORR activity with a more positive onset potential in acid solution than that of Pt/CNTs under the same condition, which could be attributed to the synergistic effect among Pt, Mo(2)C and CNTs.