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<p>This paper presents a comparative study of PtСu/C electrocatalysts synthesized on two types of carbon supports, focusing on their stability under stress testing at different temperatures. Given the crucial role of carbon support in enhancing catalyst stability, two types were investigated: a high degree of graphitization ECS-002402 (Pajarito Powder) and nitrogen-doped carbon material Ketjenblack-EC600JD (AkzoNobel). Analysis of electrochemical performance and microstructure before and after the stress testing shows that the bimetallic catalyst on a doped carbon support demonstrates higher activity both before and after the stress testing at two different temperatures. Catalyst degradation was more significant at 60&#xa0;°C than at 25&#xa0;°C, regardless of the carbon support type. These findings contribute to the development of highly active, stable catalysts for low-temperature fuel cells.</p> Graphical Abstract <p></p>

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PtCu/C electrocatalysts on different carbon supports: a comparative durability study at room and elevated temperatures

  • 期刊论文

  • 发表日期：

    2025年10月16日

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  • Sergey V. Belenov,
  • Irina A. Novomlinskaya,
  • Elizabeth A. Moguchikh,
  • Alina K. Nevelskaya,
  • Angelina S. Pavlets,
  • Ilya V. Pankov

摘要

This paper presents a comparative study of PtСu/C electrocatalysts synthesized on two types of carbon supports, focusing on their stability under stress testing at different temperatures. Given the crucial role of carbon support in enhancing catalyst stability, two types were investigated: a high degree of graphitization ECS-002402 (Pajarito Powder) and nitrogen-doped carbon material Ketjenblack-EC600JD (AkzoNobel). Analysis of electrochemical performance and microstructure before and after the stress testing shows that the bimetallic catalyst on a doped carbon support demonstrates higher activity both before and after the stress testing at two different temperatures. Catalyst degradation was more significant at 60 °C than at 25 °C, regardless of the carbon support type. These findings contribute to the development of highly active, stable catalysts for low-temperature fuel cells.

Graphical Abstract