High Pt loading has better tradeoff in polymer electrolyte membrane fuel cell (PEMFC) in terms of improved performance and operational longevity. But, to employ low amounts of Pt electrocatalysts via an alternative carbon-based support and utilization technique is vital. This study presents the use of a one-step novel technique, an electrophoretic deposition (EPD) method, through which reduced graphene oxide (rGO) supported Pt nanoparticles have been directly fabricated onto carbon paper to form electrodes for PEMFC. Our process involves simultaneous synthesis and deposition of Pt-reduced GO nanocomposites onto oxygen plasma pre-treated carbon paper in an organo-aqueous media at various deposition time. Through this technique, homogenously distributed Pt nanoparticles ranging from 5 to 6 nm in size on graphene support were successfully synthesized to form catalyst layer on carbon paper. The characteristics of fabricated electrodes were investigated ex-situ by Raman spectroscopy, FE-SEM, XPS, ICP, FIB, TEM. Furthermore, catalytic activity towards hydrogen oxidation reaction was evaluated via CV measurements and fuel cell performance tests were also conducted. The highest ECSA value of 27.4 m²g^-1 and the Pt utilization efficiency of 1.48 kW/g_Pt⁻¹ were achieved at an optimized Pt loading of 0.129 mg cm⁻². A maximum power density of 280 mW cm⁻² was obtained with increasing EPD time and Pt precursor concentration at the same time. The achieved results are attributed to the dispersion of Pt nanoparticles on rGO nanosheets displaying synergetic performance as catalyst necessary for PEMFCs, thanks to the EPD technique's viability, ease in handling, and reproducibility in the synthesis route. In the previous studies on Pt/GO based fuel cell electrodes by EPD, on one hand, Pt NPs were synthesized on GO by chemical methods first and electrodes were fabricated by a subsequent EPD. On the other hand, the fuel cell performances of those electrodes have been rarely shown. To the best of our knowledge, this is the first time in literature not only about the use of EPD technique for the fabrication of fuel cell electrodes in one-step but also the evaluation of fuel cell performance of the electrodes fabricated by EPD.

在提高性能和使用寿命方面，高Pt负载在聚合物电解质膜燃料电池（PEMFC）中具有更好的权衡。但是，通过替代的基于碳的载体和利用技术来使用少量的Pt电催化剂至关重要。这项研究提出了一种新颖的技术，即电泳沉积（EPD）方法的使用，通过该方法，还原的氧化石墨烯（rGO）负载的Pt纳米颗粒已直接制成碳纸，从而形成PEMFC的电极。我们的过程涉及在不同的沉积时间同时将Pt还原的GO纳米复合材料合成和沉积到氧等离子体预处理的碳纸上，该碳纸在有机水性介质中。通过这种技术，在石墨烯载体上成功地合成了尺寸范围为5至6 nm的均匀分布的Pt纳米颗粒，以在碳纸上形成催化剂层。通过拉曼光谱，FE-SEM，XPS，ICP，FIB，TEM异位研究了制成电极的特性。此外，通过CV测量评估了对氢氧化反应的催化活性，并且还进行了燃料电池性能测试。最高ECSA值27.4 m在0.129 mg cm ^-2的优化Pt负载下，实现了² g ^-1的Pt利用率和1.48 kW / g _Pt ^-1的Pt利用率。最大功率密度为280 mW cm ^-2同时增加EPD时间和Pt前驱体浓度即可得到。所获得的结果归因于Pt纳米颗粒在rGO纳米片上的分散，这表现出作为PEMFC必需的催化剂的协同性能，这归功于EPD技术的可行性，易处理性以及合成路线的可重复性。在先前通过EPD对基于Pt / GO的燃料电池电极的研究中，一方面，首先通过化学方法在GO上合成Pt NP，然后通过随后的EPD制造电极。另一方面，很少显示那些电极的燃料电池性能。据我们所知，