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1 6 Consider a pure H 2 - O 2 fuel cell at T = 8 0 C and P c a t h o
Consider a pure fuel cell at and atm :
a Calculate the ideal thermodynamic voltage for this fuel cell given and remember is given for STP conditions; assume liquid water product
b At calculate for the cathode given and Check any assumptionssimplifications made.
c Calculate at the cathode given and
d At calculate at the cathode. Assume
c We now pressurize the fuel cell cathode to atm but the anode pressure remains atm. Calculate the new thermodynamic voltage for this situation.
f Atj calculate for the pressurized cathode given and Keep in mind that is given for atm pressure conditions and thus will need to be corrected for the new cathode pressure. Check any assumptionssimplifications made.
g Calculate for the pressurized fuel cell cathode, again assuming and
b At calculate at the pressurized fuel cell cathode again assume How much total voltage boost is gained when operating at by pressurizing the fuel cell cathode to atm
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