9751

8995

كارشناسي ارشد

شيمي فيزيك

اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي

1393

[دوازده]،68ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

محمد ژياني

محمد محسن مومني

94/1/23

يوسف غائب، بهزاد رضايي

شيمي

ID8995

69 Construction and evaluation of Platinum free nano structure porous electrode for direct glucose fuel cell Amir Abedini a abedini@ch iut ac ir 2014 Department of chemistry Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language FarsiMohamad Zhiani m zhiani@cc iut ac irAbstract Glucose is a high energy density non toxic and easy to handle and store fuel Also it is availablein nature therefore direct glucose fuel cell is a desirable candidate for the fuel cell investigations In the recent years a large number of researches have been carried out and reported on improvingthe performance of nanocatalysts for both anode and cathode in direct glucose fuel cell In thisproject anode electrodes were made by HypermecTM Pt free nano catalysts and its performance inglucose electrooxidation reaction compared to conventional palladium anode electrode Glucoseconcentration effect on the performance of nano structural anode electrodes was investigated andoptimum concentration of glucose was determined which was 0 1M of glucose and 1M of KOH Morphological characterization and performance of HypermecTM Pt free and palladium baseelectrode were studied by scanning electron microscopy SEM and electrochemical methods suchas Cyclic Voltammetry CV Chronoamperometry current voltage curves and Electrochemicalimpedance spectroscopy EIS Study of poisoning durability and stability of catalysts investigatedin this thesis According to the results Pd C10 wt nanocatalyst had a more stability compared toHypermecTM Pt free nanocatalyst Finally a membrane electrode assembly MEA with Pt freenano structure electrode and anion exchange membrane were fabricated and developed Thementioned MEA employed in direct glucose fuel cell Maximum power density of 22mw cm 2 wereyielded for the MEA containing HypermecTM Pt free porous anode electrode and 13 mW cm 2 forthe MEA containing Pd C10 wt porous electrode at the ambient fuel and oxidant pressure theobtained results are comparable to other works results Charge transfer and mass transferresistances were studied by both of electrodes in fuel cell According to the results Hypermec TM Ptfree electrode had faster electron and mass transfer rates compared to Pd C10 wt electrode Keywords Glucose electrooxidation porous electrode direct glucose fuel cell HypermecTM Pt free nanocatalyst Pd C10 wt nanocatalyst

محمد ژياني

محمد محسن مومني

يوسف غائب، بهزاد رضايي