Highly active and durable carbon support Pt-rare earth catalyst for proton exchange membrane fuel cell. (16th October 2020)

• Record Type: Journal Article
• Authors: Chu, Tiankuo; Xie, Meng; Yang, Daijun; Ming, Pingwen; Li, Bing; Zhang, Cunman
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 51(2020)
• Page Start: 27291
• Page End: 27298
• Publication Date: 2020-10-16
• Subjects: Pt-rare earth catalyst -- Oxygen reduction reaction (ORR) -- Durability -- MEA; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2020.07.134
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Pt-rare earth catalysts are highly efficient novel electrocatalyst for oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs) due to their high stability and activity. In this study, we prepare Pt-YOx /C catalysts using the traditional wet chemical reduction method. The optimal quantity of Y-oxides loaded onto the Pt/C surface is determined based on electrochemical performance using linear sweep voltammetry (LSV) and cyclic voltammetry (CV) methods. After accelerated durability tests (ADT), the remnant electrochemical surface area (ECSA) and mass active (MA) in Pt-YOx /C catalyst are relatively higher compared to the commercial Pt/C (JM). In the single-cell test, the maximum mass power densities of the MEAs prepared by self-made Pt-YOx /C and Pt/C (JM) catalysts in cathodes record at 1895 and 1371 mW mgPt −1, respectively, which shows a successful increment in platinum utilization. These results indicate that Pt-YOx /C catalyst can potentially improve the durability and lower the cost of PEMFCs. Highlights: Prepare Y-oxides modified Pt/C NPs catalysts via classical wet co-reduction method. Y-oxides enhances the ORR activity and stability on Pt-YOx /C. High level of platinum utilization is achieved for Pt-YOx /C cathode.