Preparation and performance study of catalyst for hydrogen fuel cells
Hydrogen fuel cells is an energy conversion device which can directly convert chemical energy to electrical energy.Hydrogen fuel cells has advantages of high conversion efficiency,clean and environ-mental protection,and is considered to be the most promising new energy technology in the 21st century.As the key material of hydrogen fuel cells,catalysts directly affect the service life of batteries.In this paper,the Pt/Fe-N-C/EC composite catalyst was prepared by using carbon black as matrix and haplogenin as precursor through self-assembly pyrolysis.The electrochemical performance of the catalyst was investigated,and the membrane electrode was prepared to assemble a single battery to test the battery per-formance.The experimental results show that the prepared platinum-carbon catalyst has good electrochem-ical performance,the mass specific activity can reach 183.26 mA·mg-1,the electrochemical active area can reach 92.79 m2·g-1,and the single cell assembled by the membrane electrode has a voltage value attenuation of 18 mv at 0.8 A·cm-2 and an ECSA attenuation of 37.64％after the DOE accelerated endurance 30 000 revolutions.The prepared catalyst meets the DOE standard.
energy chemistryhydrogen fuel cellsPt/C catalystFe-N-Cmembrance electrode perform-ance
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