کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
190146 | 459692 | 2011 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Analysis of proton exchange membrane fuel cell catalyst layers for reduction of platinum loading at Nissan Analysis of proton exchange membrane fuel cell catalyst layers for reduction of platinum loading at Nissan](/preview/png/190146.png)
The biggest issue that must be addressed in promoting widespread use of fuel cell vehicles (FCVs) is to reduce the cost of the fuel cell system. Especially, it is of vital importance to reduce platinum (Pt) loading of catalyst layers (CLs) in the membrane electrode assembly (MEA) of a proton exchange membrane fuel cell (PEMFC). In order to lower the Pt loading of the MEA, mass transport of reactants related to the performance in high current density should be enhanced significantly as well as kinetics of the catalyst, which can result in the better Pt utilization and effectiveness. In this study, we summarized our analytical approach and methods for reduction of Pt loading in CLs. Microstructure, mass transport properties of the reactants, and their relation in CLs were elucidated by applying experimental analyses and computational methods. A simple CL model for I–V performance prediction was then established, where experimentally elucidated parameters of the microstructure and the properties in CLs were taken into account. Finally, we revealed the impact of lowering the Pt loading on the transport properties, polarization, and the I–V performance.
Journal: Electrochimica Acta - Volume 56, Issue 28, 1 December 2011, Pages 10832–10841