This report describes a fabrication route for membrane electrode assembly (MEA) with low Pt loading based on Nafion/sulfonated graphene oxide (SGO) nanocomposite membrane. The Pt catalyst was directly electroless deposited on both sides of Nafion/SGO membranes and electrochemical performance of the fabricated MEAs toward hydrogen adsorption/desorption reactions were studied. The effects of Nafion SGO content, Pt salt concentration, and SGO sulfonation level on the physicochemical and electrochemical characteristics of MEAs were investigated. The physicochemical properties of MEAs were studied by field emission scanning electron microscopy, water uptake (WU) measurements, and x-ray diffraction technique. Cyclic voltammetry, linear sweep voltammetry and electrochemical impedance spectroscopy techniques were applied to compare the electrochemical behavior of the prepared MEAs. WU of the best Nafion/SGO MEA appeared to be significantly higher than that of pure Nafion MEA (~ 2.5 times) and Nafion/GO MEA (~1.7 times). The electrochemical evaluation revealed the best Nafion/SGO MEA possessed a high electrochemical surface area of 67.4 m² g⁻¹, which was about 24 times and 50 % higher than those obtained for MEAs based on Nafion and Nafion/GO membranes. The best MEA showed high durability and retained about 93% of initial ECSA after 1000 cycles in an acidic solution. A high proton conductivity of 39.9 mS cm⁻¹ was achieved for this MEA in which it was about 2.5 times and 1.9 times higher compared to those of MEAs prepared based on Nafion (15.9 mS cm⁻¹) and Nafion/GO (20.7 mS cm⁻¹).

该报告描述了基于Nafion /磺化氧化石墨烯（SGO）纳米复合膜的低Pt负载的膜电极组件（MEA）的制造路线。将Pt催化剂直接化学沉积在Nafion / SGO膜的两面上，并研究了制备的MEA对氢吸附/解吸反应的电化学性能。研究了Nafion SGO含量，Pt盐浓度和SGO磺化水平对MEAs的理化和电化学特性的影响。通过场发射扫描电子显微镜，吸水率（WU）测量和X射线衍射技术研究了MEA的理化性质。循环伏安法 应用线性扫描伏安法和电化学阻抗谱技术比较了制备的MEA的电化学行为。最好的Nafion / SGO MEA的WU明显高于纯Nafion MEA（〜2.5倍）和Nafion / GO MEA（〜1.7倍）。电化学评估表明，最好的Nafion / SGO MEA具有67.4 m的高电化学表面积² g ^-1，这比基于Nafion和Nafion / GO膜的MEA所获得的那些高约24倍，高出50％。最佳的MEA显示出高耐久性，并在酸性溶液中循环1000次后保留了初始ECSA的约93％。该MEA实现了39.9 mS cm ^-1的高质子传导率，与基于Nafion（15.9 mS cm ^-1）和Nafion / GO（20.7 mS cm）制备的MEA相比，其质子传导率分别高约2.5倍和1.9倍^-1）。