Research On Performance Of Membrane Electrode Assembly In Proton Exchange Membrane Fuel Cells

Proton Exchange Membrane Fuel Cell (PEMFC) has someoutstanding merits such as cleanness and high efficiency. It has beenregarded as the most ideal energy of the future electric vehicles. But itsindustrialization is restricted by the high preparation cost. Therefore it ismore and more urgent to reduce its cost and enhance its performance.Membrane Electrode Assembly (MEA) is the key components ofPEMFC. In this paper, we optimized the traditional method of MEApreparation and did some primary studies about the humidification ofMEA. Then we explored the new preparation method, which couldproduce new electrodes with better performance. Further more, westudied the effects of the pore-forming substances on the electrode. Itrevealed that the pore-forming substances could increase the utilizationefficiency of the Pt/C electro-catalyst and improve the performance ofthe cells. The mechanism of pore-forming was discussed for the firsttime in this paper.It is known that platinum is one kind of noble metal and the Pt/Celectro-catalyst has high price and finite utilization life. In order todecrease the preparation cost of PEMFC, we studied to recycle the Pt/Celectro-catalyst. We researched the performance of the reclaimedcatalyst in virtue of some techniques such as XRD, TEM, CV andelectrochemistry test of MEA.The foreign material has high performance, but it's expensive. Westudied the how MEA shape pressure and MEA shape temperatureinfluenced the electrode performance, at the same time we compared theelectrode made of the domestic PEM polarization performance with theforeign one.