CoMoO4 decorated on the surface of Co,N-doped carbon polyhedrons as the support of platinum with excellent electrocatalytic activity and durability

The construction of cost-effective and durable electrocatalysts for methanol oxidation reactions (MOR) is a major challenge for direct methanol fuel cells. Herein, we report a novel catalyst support with CoMoO 4 in-situ coated on the Co,N-doped carbon polyhedrons (Co,N-DCP) by a hydrothermal method . Owing to the efficient electron transport , unique architectural structure and synergistic effect of carbon framework, bimetal oxides and Pt nanoparticles , the integrated Pt–CoMoO 4 @Co,N-DCP catalyst exhibits excellent MOR activity in alkaline electrolyte (a mass specific activity of 4450 mA mg pt −1 at 50 mV s −1 was achieved), which is nearly three times improvement when compared with the commercial Pt/C catalyst. Furthermore, the obtained Pt–CoMoO 4 @Co,N-DCP catalyst possesses remarkable electrochemical durability compared to commercial Pt/C. These results revealed that the Pt–CoMoO 4 @Co,N-DCP hybrid is a promising catalyst for MOR. The current work offers new perspectives in the designing of novel structure, highly active and stable catalysts materials in the application of DMFCs electrocatalysis .