Three-dimensional porous PtCu as highly efficient electrocatalysts for methanol oxidation reaction |
| |
Affiliation: | State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, Hainan, China |
| |
Abstract: | Exploring affordable, durable, and effective electrocatalysts for methanol oxidation reaction (MOR) is of great importance to the industrial application of direct methanol fuel cells. Herein, a three-dimensional (3D) porous PtCu catalyst is synthesized by a facile and effective galvanic replacement method, which exhibits high activity and durability for MOR. The modulated electronic and strain effects of the Pt atoms are verified by extensive characterizations, and the mass and specific activities of the prepared catalyst are roughly 3.8 and 9.9 times higher than those of the commercial Pt/C catalysts, respectively. The robust activity of the prepared catalyst is probably owing to the optimized affination between Pt and the adsorbed poisoning species (mainly CO) induced by the electronic and strain effects of the Pt, as well as the unique 3D porous nanostructure. |
| |
Keywords: | Fuel cells Porous nanostructure PtCu Methanol oxidation reaction Anti-poisoning |
本文献已被 ScienceDirect 等数据库收录! |
|