What recommendations you can give the company

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Question: A fuel cell is running a typical current density of 0.6 A cm2. The anode catalyst was tested and gave a jo= 10* A cm2 and a = 0.42, while the cathode catalyst gave a jo= 10-'A cm2 and a = 0.35. The temperature is 80 °C. a) What are the overpotentials for the anode (1act anode) and cathode (1act cathode) and the cell voltage assuming an Nohmie = 0.1 V and no concentration overpotential? (5 pts) b) The company running the fuel cell is worried about future changes to the activation overpotentials. The have asked you to do the following plots: 1) Anode overpotential as a function of a change in a (0.1 to 0.5) 2) Cathode overpotential as a function of fo (10to 107A cm) 3) Cathode overpotential as a function of temperature (40 to 80 C) In all three cases, use the x axis range listed. (10 pts) c) Comment on the results plotted in b) and what recommendations you can give the company.

Reference no: EM133575678

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