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This study focuses on the development of hybrid platinum-containing electrocatalysts for the cathode of proton exchange membrane fuel cells (PEMFCs)Proton exchange membrane fuel cells (PEMFC) with varying mass fractions of the precious metal. A commercial Pt/CPt/C catalyst with a platinum loading of 20% and small-sized nanoparticles (2.9 nm) evenly distributed across the support surface, was mechanically blended with a material containing 60% platinum and characterized by larger average nanoparticleNanoparticle size (3.8 nm). A series ofHybrid catalyst hybrid catalysts with platinum loadings ranging from 25 to 55% (Hyb25 to Hyb55) were produced. The study investigated the structural characteristics of the precursor samples and conducted a comparative analysis of the electrochemical behavior of the resulting hybrid catalystsHybrid catalyst using a thin-filmFilm rotating disk electrodeElectrode (TF-RDE)Rotating disk electrode (RDE) to determine the electrochemically active surface area (ESA) and mass activity in theOxygen reduction reaction (ORR) oxygen reduction reaction (ORR). The hybrid catalysts exhibited high ESA and ORR activity, surpassing the performance of commercial precursor catalysts.

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Hybrid Electrocatalyst Based on Pt/C with Varying Mass Fraction of Platinum for PEMFC

  • 会议论文

  • 发表日期：

    2025年

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  • Yana Astravukh,
  • Angelina Pavlets,
  • Aleksey Nikulin,
  • Ilya Pankov,
  • Danil Alekseenko,
  • Anastasia Alekseenko

摘要

This study focuses on the development of hybrid platinum-containing electrocatalysts for the cathode of proton exchange membrane fuel cells (PEMFCs)Proton exchange membrane fuel cells (PEMFC) with varying mass fractions of the precious metal. A commercial Pt/CPt/C catalyst with a platinum loading of 20% and small-sized nanoparticles (2.9 nm) evenly distributed across the support surface, was mechanically blended with a material containing 60% platinum and characterized by larger average nanoparticleNanoparticle size (3.8 nm). A series ofHybrid catalyst hybrid catalysts with platinum loadings ranging from 25 to 55% (Hyb25 to Hyb55) were produced. The study investigated the structural characteristics of the precursor samples and conducted a comparative analysis of the electrochemical behavior of the resulting hybrid catalystsHybrid catalyst using a thin-filmFilm rotating disk electrodeElectrode (TF-RDE)Rotating disk electrode (RDE) to determine the electrochemically active surface area (ESA) and mass activity in theOxygen reduction reaction (ORR) oxygen reduction reaction (ORR). The hybrid catalysts exhibited high ESA and ORR activity, surpassing the performance of commercial precursor catalysts.