Dear all, I would like to know to conduct an interfacial stability test or overpotential test for an electrolyte using Li/Li symmetry cell. How the settings in the GCD battery testing system should be? Some of the literature will just mention the current density used, such as 0.1 mA cm-2. How to obtain the GCD curve like the example attached? So let's say my gel electrolyte has a surface area of 28.35 cm2, so I just set a constant charge current of 0.1mA cm-2 x 28.35 cm2 = 2.8 mA. What about the condition for a complete charge cycle ? For example, for LCO/Li cells, I know to charge them to 4.2V and discharge them to 2.7 V. But I am confused with symmetrical cells.
You don't need to worry about the potential. You just apply the current and record the overpotential. If possible, please check the operation range of your cycler and apply the cut-off condition for safety issues.
For symmetric cell testing, you need to decide the applied current density (mA/cm2) and areal capacity (mAh/cm2). Based on those, the how long time for each step will be calculated.
An-Giang Nguyen but if I don't set an end condition for a cycle (such as
Tommy Hoong Wy Lee you should set the interval time for each step.
For example, if you want to check at the areal capacity of 1 mAh/cm2 with the applied current of 1 mA/cm2, you should set the step time of 1 hour.
- Badges
- Science topic
- Similar topics
- Engineering
- Chemical Engineering