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On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method
Published on: March 16, 2018
Improving the electrocatalytic properties of Pd-based catalyst for direct alcohol fuel cells: effect of solid
Cuilian Wen1, Ying Wei1, Dian Tang1
1College of Materials Science and Engineering, Fuzhou University, Fuzhou, Fujian, 350116, P.R. China.
Abstract:
The tolerance of the electrode against the CO species absorbed upon the surface presents the biggest dilemma of the alcohol fuel cells. Here we report for the first time that the inclusion of (Zr, Ce)O2 solid solution as the supporting material can significantly improve the anti-CO-poisoning as well as the activity of Pd/C catalyst for ethylene glycol electro-oxidation in KOH medium. In particular, the physical origin of the improved electrocatalytic properties has been unraveled by first principle calculations. The 3D stereoscopic Pd cluster on the surface of (Zr, Ce)O2 solid solution leads to weaker Pd-C bonding and smaller CO desorption driving force. These results support that the Pd/ZrO2-CeO2/C composite catalyst could be used as a promising effective candidate for direct alcohol fuel cells application.
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