کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
189476 | 459680 | 2011 | 20 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Analysis of high temperature polymer electrolyte membrane fuel cell electrodes using electrochemical impedance spectroscopy Analysis of high temperature polymer electrolyte membrane fuel cell electrodes using electrochemical impedance spectroscopy](/preview/png/189476.png)
An electrochemical impedance spectroscopy (EIS) study of electrodes in a phosphoric acid loaded polybenzimidazole (PBI) membrane fuel cell is reported. Using EIS, the effect of electrode parameters such as Pt catalyst wt%, acid doping in PBI and PTFE baesd electrodes and catalyst heat treatment on kinetic and mass transport characteristics is characterised. The influence of cell parameters of current load, temperature and oxidant gas on response is demonstrated and interpreted using an equivalent circuit model. For polarisable electrodes under small to medium steady-state current operation, the model was capable of identifying electrodes with the best kinetic or mass transport behaviour and classifying behaviour in terms of relative performance.
► An electrochemical impedance spectroscopy study of PBI/phosphoric acid electrodes.
► The model identified electrodes with the best kinetic or mass transport behaviour.
► The model classified electrodes behaviour in terms of relative performance.
► Cell parameters effect of current, temperature and oxidant on response is reported.
Journal: Electrochimica Acta - Volume 56, Issue 16, 30 June 2011, Pages 5493–5512