30493

طراحي، بهينه سازي و ساخت مجموعه غشاء -كاتاليست پيل سوختي الكل مستقيم: رويكردي مبتني بر تحليل فني-اقتصادي

كارشناسي ارشد

مهندسي سيستم هاي انرژي

1399

1402/10/17

عليرضا زاهدي

مهندسي فناوري‌هاي نوين

پيل سوختي بعنوان يك سيستم الكتروشيميايي كه سوخت را مستقيما به انرژي الكتريكي تبديل ميكند، متشكل از اجزاي اصلي مجموعه غشا الكترود، صفحات دوقطبي و صفحات جمع كننده جريان ميباشد. دلايلي چون سادگي ساختار دماي عملكرد پايين و عدم ايجاد الودگي زيسا محيطي در پيل هاي سوختي غشا پليمري باعث شده تا اين نوع پيل نسبت به ساير انواع پيل سوختي ، به طور گسترده در مقاصد حمل و نقل و توليد توان استفاده شود. در پژوهش پيش رو جهت دستيابي به پيل سوختي غشا پليمري ارزان قيمت با حداكثر چگالي توان خروجي، ساخت و بهينه سازي مجموعه غشا كاتاليست بر پايه پلي آنيلين سنتز شده به روش غشا انجام گرفت. هدايت الكتريكي نمونه هاي تهيه شده با آزمون هدايت الكتريكي توسط دستگاه 4-اتصاله اندازه گيري شد. نتايج نشان داد نمونه غشا كاتاليست بهينه داراي هدايت الكتريكي 55/994 ميلي زيمنس بر سانتي متر مي باشد.

1402/11/29

Design, optimization and fabrication of membrane-electrode assembly(MEA) for Direct Alcohol Fuel Cell (DAFC): a techno-economic analysis approach

1/1/1900 12:00:00 AM

Fuel cell as an electrochemical system that converts the chemical energy of the fuel directly into electrical energy, consists of the main components of membrane-electrode assembly, bipolar plates and current collecting plates. Reasons such as the simplicity of the structure, low operating temperature, no environmental pollution, silent operation, and appropriate dimensions in polymer membrane fuel cells have made this type of cell widely used in transportation purposes and constant power generation compared to other types of fuel cells. to be the main problems of polymer membrane fuel cells are their high price and relatively low output power, which are widely influenced by the way they are made, the materials used, and the performance of the membrane-catalyst complex. In the upcoming research, in order to achieve an inexpensive polymer membrane fuel cell with maximum output power density, the construction and optimization of the membrane-catalyst assembly based on polyaniline nanofibers synthesized by the membrane method and optimized by the experimental design method was carried out. For this purpose, polyanilines with different characteristics were produced by using acid of different agents, and using scanning electron microscope tests, infrared Fourier transform spectroscopy and electrical conductivity test, the most suitable type was selected for use in the catalyst layer. became. Then, using experimental design methods through the Design Expert software, 17 electrode-catalyst samples with dimensions of 5 square centimeters were prepared based on three parameters: the ratio of aniline to ammonium persulfate, acid to aniline, and polyaniline to electrode loading. The polyaniline layer was deposited using the electrospinning device. The electrical conductivity of the prepared samples was measured by a 4-point conductivity test device and the results, along with cost response, were entered into the experimental design software. After analyzing the data by the software and determining the optimal parameter values, an optimized membrane-catalyst sample with an electrical conductivity of 55.994 milliSiemens per centimeter was fabricated.

پيل سوختي الكل مستقيم , مجموعه غشا كاتاليست , پلي آنيلين , بارگزاري كاتاليست , چگالي توان

direct alcohol fuel cell , membrane-electrode assembly , polyaniline , catalyst loading , power density

Seyed Yasin Hosseini mallaei

Alireza Zahedi