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<p>Au-doped PtCo/C (AuPtCo/C) as an oxygen reduction reaction (ORR) catalyst is synthesized using a facile single-step solution phase synthesis method with Triton X-100 as a mediator guiding the shape and size of the metal nanoparticles. The spherical-shaped nanoparticles of 2–4&#xa0;nm were uniformly dispersed over the porous carbon support accounting for an electrochemical active surface area (ECSA) of 52 m<sup>2</sup>/g<sub>Pt</sub>. It was observed that at 0.9&#xa0;V, the mass activity (<i>I</i><sub>m</sub>) of AuPtCo/C catalyst is 0.57 A/mg<sub>Pt</sub> which is 4 times higher in relation to commercial Pt/C catalyst. While evaluating in real-time PEMFC configuration under acidic environment, this catalyst delivers a peak power density of 1.33 W/cm<sup>2</sup> at a current density of 3.43 A/cm<sup>2</sup> with H<sub>2</sub>/O<sub>2</sub> feeds under ambient pressure, thus emerging as a promising electrocatalyst for fuel cell applications.</p>

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Triton X-100-mediated one-pot solution phase synthesis of AuPtCo/C nanoparticles with enhanced oxygen reduction performance in fuel cells

  • 期刊论文

  • 发表日期：

    2025年1月3日

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  • Prateekshita Mukherjee,
  • Sumanta Kumar Das,
  • Sanjay D. Sutar,
  • Anita Swami,
  • Akhila Kumar Sahu

摘要

Au-doped PtCo/C (AuPtCo/C) as an oxygen reduction reaction (ORR) catalyst is synthesized using a facile single-step solution phase synthesis method with Triton X-100 as a mediator guiding the shape and size of the metal nanoparticles. The spherical-shaped nanoparticles of 2–4 nm were uniformly dispersed over the porous carbon support accounting for an electrochemical active surface area (ECSA) of 52 m2/gPt. It was observed that at 0.9 V, the mass activity (Im) of AuPtCo/C catalyst is 0.57 A/mgPt which is 4 times higher in relation to commercial Pt/C catalyst. While evaluating in real-time PEMFC configuration under acidic environment, this catalyst delivers a peak power density of 1.33 W/cm2 at a current density of 3.43 A/cm2 with H2/O2 feeds under ambient pressure, thus emerging as a promising electrocatalyst for fuel cell applications.