کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
196665 | 459848 | 2006 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Direct numerical simulation (DNS) modeling of PEFC electrodes: Part I. Regular microstructure Direct numerical simulation (DNS) modeling of PEFC electrodes: Part I. Regular microstructure](/preview/png/196665.png)
A direct numerical simulation (DNS) model is developed to achieve pore-level description of polymer electrolyte fuel cell (PEFC) electrodes. The DNS method solves point-wise accurate conservation equations directly on an electrode microstructure comprising of various phases and hence utilizes the intrinsic transport properties of each phase. Idealized two- and three-dimensional regular microstructures are constructed to represent the porous cathode catalyst layer. Various voltage losses identified from the simulation results are compared with experimental observations. This pore-scale model is further applied to study the morphological effects, such as pore size, layer thickness and porosity, on the performance of the cathode catalyst layer.
Journal: Electrochimica Acta - Volume 51, Issue 15, 1 April 2006, Pages 3139–3150