The Reactive Spray Deposition Technology (RSDT) process was employed  to successfully deposit a supported catalyst with ionomer in a single step onto a pyridine-based proton conducting polymer membrane manufactured by ADVENT Technologies (TPS membrane), a high temperature membrane that operates at 200^oC. The membrane and catalyst were placed between gas distribution layers to create the membrane electrode assembly (MEA). The process allowed for a significantly reduced weight loading (mg_Pt/cm²) on both anode and cathode, while maintaining similar performance when compared to the current Gas Diffusion Electrode (GDE) method [1]. Direct membrane depositions reduce catalyst loading and allow for thinner coatings, for example a 0.08 mg_Pt/cm² loading sample has a thickness of 5 mm. Electrodes comprising Pt/Vulcan XC-72R were deposited directly onto 210% doped (phosphoric acid) ADVENT TPS membranes. This one-step process eliminates the typical multi-step processes for electrode preparation currently used, comprising of Pt/Carbon catalyst preparation, ink formation and coating, and electrode heat treatment. Thus, a reduction in the manufacturing cost is expected not only due to step elimination but also to lower energy consumption, making RSDT process a ‘Green’ manufacturing method. Additionally, the process simultaneously attaches the Pt to a carbon support and incorporates the product into a film. This eliminates the cost premium required to purchase a pre-formed Pt/carbon catalyst. The results obtained  for 25 cm² Membrane Electrode Assembly (MEA) with anode and cathode Pt loading of 0.08  mg_Pt/cm² indicate a voltage of 635 mV and 550 mV at 200 and 500 mA/cm², respectively, the testing conditions of 50 sccm H₂ and 280 sccm air.