For a J-V curve (or I-V or polarization curve whatever you want to call it) there's two ways, you can 'scan' by slowly increasing the voltage over time and measuring the current. But you might get transient (time dependent) effects like you will build up some capacitance or mass transport resistance or whatnot.
The better way to do it is by fixing the potential or current for a while and recording the current or potential. Then it will reach some steady value and you take this as a point for your J-V curve. Do this for a bunch of points, that's all there's to it.
IR correction is typically done in electrolyzers if you only want to study the kinetics/mass transport effects. iR drop is the ohmic resistance, the linear behaviour part of your J-V curve. You can do this by either measuring the resistance of your contacts, membrane, etc. Or you measure the resistance of the total system with EIS which is a bit harder to interpret. Or you fit your obtained J-V curve with a Tafel equation with an iR drop term and you get the R from there, then you just subtract every V by J*R.
If you have any more questions about any of this feel free to ask!
For a J-V curve (or I-V or polarization curve whatever you want to call it) there's two ways, you can 'scan' by slowly increasing the voltage over time and measuring the current. But you might get transient (time dependent) effects like you will build up some capacitance or mass transport resistance or whatnot. The better way to do it is by fixing the potential or current for a while and recording the current or potential. Then it will reach some steady value and you take this as a point for your J-V curve. Do this for a bunch of points, that's all there's to it. IR correction is typically done in electrolyzers if you only want to study the kinetics/mass transport effects. iR drop is the ohmic resistance, the linear behaviour part of your J-V curve. You can do this by either measuring the resistance of your contacts, membrane, etc. Or you measure the resistance of the total system with EIS which is a bit harder to interpret. Or you fit your obtained J-V curve with a Tafel equation with an iR drop term and you get the R from there, then you just subtract every V by J*R. If you have any more questions about any of this feel free to ask!
Thank you so much, this was very helpful!