Abstract Developing high-performance electrocatalysts using simple and controllable methods is of interest to reduce the cost of polymer electrolyte membrane fuel cells. In this study, platinum is alloyed with nickel and supported on carbon (Pt–Ni/C) via an ultrasound-assisted route. The crystallite and particle sizes of the obtained nanoparticles were smaller than the commercial carbon-supported Pt nanoparticles. The sonochemically synthesized Pt–Ni/C nanoparticles exhibited superior electrocatalytic properties than the commercial Pt/C nanoparticles in the fuel cell operation. Electrochemical measurements performed with Pt–Ni/C electrocatalyst displayed excellent oxygen reduction and higher electrochemical active surface area (EASA). Optimum fuel cell performance based on peak power density using Pt–Ni/C electrocatalyst was observed as 0.28 W/cm2 at 0.39 V.

中文翻译：

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声化学合成 Pt-Ni/C 纳米粒子在燃料电池应用中的电催化性能

摘要 使用简单可控的方法开发高性能电催化剂对于降低聚合物电解质膜燃料电池的成本具有重要意义。在这项研究中，铂与镍形成合金，并通过超声辅助途径负载在碳 (Pt-Ni/C) 上。获得的纳米粒子的微晶和粒径小于商业碳负载的 Pt 纳米粒子。声化学合成的 Pt-Ni/C 纳米颗粒在燃料电池运行中表现出优于商业 Pt/C 纳米颗粒的电催化性能。使用 Pt-Ni/C 电催化剂进行的电化学测量显示出优异的氧还原和更高的电化学活性表面积 (EASA)。