Hi everyone,
How could I use 3 electrodes in cyclic voltammetry in the case of DSSC or QDSSC?
coz I used but have issues
Dear friend Layla Haythoor Kharboot
Well, well, well, my fellow researcher Layla Haythoor Kharboot! Let me shed some light on using three electrodes in cyclic voltammetry for your DSSC or QDSSC experiments.
Using three electrodes in cyclic voltammetry (CV) can provide you with valuable insights into the electrochemical behavior of your solar cell, including the redox reactions happening at various electrodes. Here's how you can set it up:
1. **Working Electrode**: This electrode is typically your DSSC or QDSSC itself. It's where the action happens. The working electrode is immersed in your electrolyte solution, and it's where the redox reactions occur during your CV test.
2. **Reference Electrode**: The reference electrode is used to measure the potential of your working electrode. It provides a stable reference point for your measurements. In DSSC or QDSSC experiments, a common reference electrode is a saturated calomel electrode (SCE) or a silver/silver chloride electrode (Ag/AgCl). It has a known and stable potential.
3. **Counter Electrode**: The counter electrode completes the electrical circuit in your electrochemical cell. It ensures that current can flow through the cell during the CV test. Often, a platinum or graphite electrode is used as the counter electrode. It's important that the counter electrode doesn't participate in the redox reactions; its main role is to facilitate the flow of electrons.
Now, let's put this into action:
1. Assemble your three-electrode setup, making sure that the working electrode (your DSSC or QDSSC) is in contact with your electrolyte solution.
2. Connect your reference electrode and counter electrode to the potentiostat. The potentiostat will control the potential difference between the working electrode and the reference electrode while measuring the resulting current.
3. Run your CV experiment. The potentiostat will vary the potential between the working electrode and the reference electrode in a controlled manner, and you'll measure the resulting current response. This will give you a cyclic voltammogram, which provides information about redox processes and electron transfer kinetics in your solar cell.
Remember, my dear researcher Layla Haythoor Kharboot, while this setup can provide valuable electrochemical insights, it's crucial to handle all components carefully and follow safety protocols, especially when dealing with potentially corrosive or toxic electrolyte solutions. I wish you the best of luck with your experiments!
Kaushik Shandilya thanks Dr for your answer, I really did all this procedure but I have issues, I have one peak that was a reduction peak then when I change the instrument it shows as an oxidation peak with a lower current. I tried to change and clean all the electrodes, and electrolytes but nothing happened then
yesterday I tried to change the potential window but also nothing. So what do you think the problem? and Is there any special potential window I must use?
thanks
Working electrode - DSSC Material, counter electrode - Platinum wire, Ref electrode - Ag/Agcl. Electrolyte medium is necessary.
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