Could anyone tell me if I can do galvanostatic charging/discharging test by using "Epsilon instrument"? I tried to do it by using chronopotentiometry tool but I feel that something is wrong.
This instrument can do only two galvanostatic modes: chronopotentiometry and double step chronopotentiometry.
Dear Hagar,
look at
http://www.basinc.com/products/ec/epsilon/features.html
or
http://www.basinc.com/mans/EC_epsilon/Techniques/CPot/cp.html
i.e. galvanostatic charging should be possible. As I have learned, you may download the newest software if you register at the main page! Good luck, Dirk
Thanks Dirk for your help actually, i have a problem with the input parameters. the potential in out put graph (potential vs. time) should increase with time during charging process and decrease during discharging but i could not get this shape! so, i suggest that i have a problem with the experiment setup .
In fact, it sounds as if something is wrong with your potentiostat / galvanostat system. Try to check this by using an equivalent circuit, use a very big capacitor and a large ohmic resistance to charge/discharge this capacitor with your galvanostatic mode of the system. If the output is correct, then the problem should be somewhere else. Usually, you should have obtained some equivalent circuits with your system, at least we got some with all of our potentiostats (EcoLab, PAR, ...). But it is quite easy to solder some realistic circuits ! Good luck, Dirk
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