کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10568191 | 973398 | 2005 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rigorous dynamic model of a direct methanol fuel cell based on Maxwell-Stefan mass transport equations and a Flory-Huggins activity model: Formulation and experimental validation
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
MEAs.s.PTFEPEMFCDMFcAnode diffusion layerPEMCCPACPPolymer electrolyte membrane fuel cell - سلول سوختی غشای الکترولیتی پلیمرPolymer electrolyte membrane - غشای الکترولیتی پلیمرFlory–Huggins - فلوری هگیگینزCathode catalyst layer - لاک کاتالیست کاتدAnode catalyst layer - لایه کاتالیست آنودMaxwell–Stefan - ماکسول استیفنliquid - مایع Model - مدلdirect methanol fuel cell - پیل سوختی متانولی مستقیمGas - گاز
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A one-dimensional rigorous process model of a single-cell direct methanol fuel cell (DMFC) is presented. Multi-component mass transport in the diffusion layers and the polymer electrolyte membrane (PEM) is described using the generalised Maxwell-Stefan (MS) equation for porous structures. In the PEM, also local swelling behaviour and non-idealities are accounted for by a Flory-Huggins model for the activities of the mobile species inside the pores of the PEM. Phase equilibria between the pore liquid inside the PEM and those inside the pores of both catalyst layer are formulated based on literature data and activity models. Although two-phase behaviour in both diffusion layers is neglected, the model shows good agreement to own experimental data over a wide range of operating conditions, with respect to methanol and water crossover fluxes as well as to current-voltage characteristics. Only for very low current densities and in the limiting current regime significant deviations between model and experiments are found.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 145, Issue 2, 18 August 2005, Pages 435-462
Journal: Journal of Power Sources - Volume 145, Issue 2, 18 August 2005, Pages 435-462
نویسندگان
Thorsten Schultz, Kai Sundmacher,