Synthesis and eva‎luation of Gas Diffusion Layer for Proton Exchange Membrane Fuel Cells

9/19/2024 12:00:00 AM

Due to the vital role, high price, and the direction of localization in the country, in the present study in the present study single and triple layer gas diffusion layers (GDL) were produced for the proton exchange membrane fuel cell. After choosing multi-walled carbon nanotubes as raw material and a vacuum filtration method to produce single layer GDL, in order to optimize the produced sample, the design of experiment was done using Minitab software. Also, in order to change the structure of pores, a pore-forming agent (polymethyl methacrylate (PMMA)) was used; A method that is considered a kind of innovation. Two thin layers with different structures were placed on the single-layer sample to prepare triple-layer GDL. First, a layer of carbon nanotubes was placed on the single-layer GDL. As an innovative method, the second layer was also produced by electrochemical deposition of polyaniline to finally make a three-layer GDL. Finally, by preparing the membrane-electrode assembly, the performance of the produced GDLs and the commercial one was eva‎luated in different relative humidities. Based on results, relative humidity of 10%, single-layer and three-layer samples produced 125% and 309.2% more power density than commercial GDL, respectively. In relative humidity of 100%, the above values were obtained as 57.9% and 112.4%, respectively. Also, due to the design used in the production, the three-layer sample provided almost constant performance in a wide range of relative humidity; A very convenient feature that is reported to be vital in the commercialization of fuel cells.

پيل سوختي غشا تبادل پروتون , لايه نفوذ گاز , زيرلايه ماكرومتخلخل , لايه ميكرو متخلخل , مجموعه الكترود-غشا , ترسيب الكتروشيميايي , پلي‌آنيلين

Proton Exchange Membrane Fuel Cell , gas diffusion layer , Macroporous Substrate , Microporous layer , Membrane -Electrode Assembly , Electrochemical deposition , polyaniline

Reza Habibi

Dr. Soosan Roshan Zamir