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Fuel cell I-v Curve

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Old   November 14, 2013, 00:27
Default Fuel cell I-v Curve
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Alireza Setayesh Hagh
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Hi
I am trying to plot I-V curve for fuel cell is there any one who can help me in this respect
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Old   November 15, 2013, 06:11
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Hi Buddy,
It's an easy work. Impose the appropriate value for voltage on cathode wall terminal and calculate the corresponding current density. You need to do the same procedure for a few points. Then plot the values. Just keep in mind that, start from a voltage near to open circuit voltage and decrease it as e step function.
I hope it helps
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Old   November 15, 2013, 09:12
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dear sir
Thank you very much
1-But why I should start from Open circuit voltage
2-what do you mean by"Just keep in mind that, start from a voltage near to open circuit voltage and decrease it as e step function.
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Old   November 15, 2013, 12:05
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Quote:
Originally Posted by Aliset1236 View Post
dear sir
Thank you very much
1-But why I should start from Open circuit voltage
2-what do you mean by"Just keep in mind that, start from a voltage near to open circuit voltage and decrease it as e step function.

It turns out you didn't take my points. I meant, to plot a I-V curve, you need to do simulation at least for a few points, right? For instance, let say V=0.9, 0.8,0.7,0.6,0.5, 0.4 , ...
So, you must calculate the corresponding current density, respectively. By saying the above statement, I meant that you start from 0.9 (near to Open circuit ) and obtain its current density, and then go to 0.8 and obtain the current density for this too and so forth. As you see, it's like a step function with magnitude of 0.1.
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