In this study, it is aimed to investigate the graphitization effect on the performance of the multi walled carbon nanotube catalyst support for high temperature proton exchange membrane fuel cell (HT-PEMFC) application. Microwave synthesis method was selected to load Pt nanoparticles on both CNT materials. Prepared catalyst was analyzed thermal analysis (TGA), Transmission Electron Microscopy (TEM) and corrosion tests. TEM analysis proved that a distribution of Pt nanoparticles with a size range of 2.8–3.1 nm was loaded on the Pt/CNT and Pt/GCNT catalysts. Gas diffusion electrodes (GDE) were manufactured by an ultrasonic spray method with synthesized catalyst. Polybenzimidazole (PBI) membrane based Membrane Electrode Assembly (MEA) was prepared for observe the performance of the prepared catalysts. The synthesized catalysts were also tested in a HT-PEMFC environment with a 5 cm² active area at 160 °C without humidification. This study demonstrates the feasibility of using the microwave synthesis method as a fast and effective method for preparing high performance Pt/CNT and Pt/GCNT catalyst for HT-PEMFC. The HT-PEMFC performance evaluation shows current densities of 0.36 A/cm²0.30 A/cm² and 0.20 A/cm² for the MEAs prepared with Pt/GCNT, Pt/CNT and Pt/C catalysts @ 0.6 V operating voltage, respectively. AST (Accelerated Stress Test) analyzes of MEAs prepared with Pt/GCNT and Pt/CNT catalysts were also performed and compared with Pt/C catalyst. According to current density @ 0.6 V after 10,000 potential cycles, Pt/GCNT, Pt/CNT and Pt/C catalysts can retain 61%, 67% and 60% of their performance, respectively.

在这项研究中，旨在研究石墨化对高温质子交换膜燃料电池（HT-PEMFC）应用的多壁碳纳米管催化剂载体性能的影响。选择微波合成方法将Pt纳米颗粒负载在两种CNT材料上。对制备的催化剂进行了热分析（TGA），透射电子显微镜（TEM）和腐蚀测试。TEM分析证明，在Pt / CNT和Pt / GCNT催化剂上负载了大小为2.8-3.1 nm的Pt纳米颗粒。气体扩散电极（GDE）是利用合成催化剂通过超声波喷雾法制造的。制备了基于聚苯并咪唑（PBI）膜的膜电极组件（MEA），以观察所制备催化剂的性能。^2个活动区域，温度160°C，不加湿。这项研究证明了微波合成方法作为一种快速有效的方法制备HT-PEMFC高性能Pt / CNT和Pt / GCNT催化剂的可行性。HT-PEMFC性能评估显示，使用Pt / GCNT，Pt / CNT和Pt / C催化剂在0.6 V工作电压下制备的MEA的电流密度分别为0.36 A / cm ² 0.30 A / cm ²和0.20 A / cm ²。还进行了使用Pt / GCNT和Pt / CNT催化剂制备的MEA的AST（加速应力测试）分析，并将其与Pt / C催化剂进行了比较。根据在10,000个潜在循环后在0.6 V下的电流密度，Pt / GCNT，Pt / CNT和Pt / C催化剂可以分别保持其性能的61％，67％和60％。