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Automotive Engineering ›› 2025, Vol. 47 ›› Issue (12): 2366-2377.doi: 10.19562/j.chinasae.qcgc.2025.12.009

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Designing and Developing High Durability Low-Pt Oxygen Reduction Reaction Catalyst

Lutian Zhao,Jia Wang,Yi Wang,Haifeng Fang()   

  1. China Automotive Technology and Research Center Co. ,Ltd. ,China Automotive Strategy and Policy Research Center,Tianjin 300300
  • Received:2025-04-01 Revised:2025-06-08 Online:2025-12-25 Published:2025-12-19
  • Contact: Haifeng Fang E-mail:fanghaifeng@catarc.ac.cn

Abstract:

Hydrogen fuel cell vehicles (FCVs) are considered as the ultimate solution fore zero carbon transportation. In recent years, the key components' technologies of FCVs have been continuously promoted to meet the basic needs of short-distance transportation. However, the diverse commercial application scenarios in the future have put forward higher requirements for manufacturing cost and durability of the core components of the fuel cell stack. The cathode Pt-based catalyst fundamentally enhances the power density of the fuel cell stack, but its high price has become the main reason for the increase of stack cost. Decreasing the Pt content while improving catalyst performance has become an important research direction for catalysts. However, the durability of the catalyst will face new challenges with the decrease of the Pt content. Therefore, the design and development of high-durability, low-Pt catalysts are crucial for enhancing the lifespan of the fuel stack and hydrogen fuel cell vehicles. Starting from the analysis of the catalytic reaction mechanism of Pt-based catalysts and the attenuation mechanism of low Pt catalysts under actual operating conditions of FCVs, this paper focuses on the optimization of Pt active sites to explore the principles of improving their durability. Additionally, a review of existing research results is conducted and finally the design and development direction of high-performance low-Pt oxygen reduction catalysts in the future are discussed.

Key words: fuel cell vehicles (FCVs), proton exchange membrane fuel cells(PEMFCs), oxygen reduction reaction (ORR), high durability low-Pt catalyst