Dear friend Suraj Kumar

Thank you for raising such an insightful question regarding the galvanostatic charge-discharge (GCD) process, particularly in the context of your asymmetric cell configuration. Your attention to the current density and mass balance is crucial for ensuring accurate and meaningful electrochemical measurements.

Given your cathode and anode masses of 1 mg and 5 mg respectively (totaling 0.006 g), applying a current density of 1 A/g to the combined mass would result in a total current of 0.006 A, or 6 mA. This calculation is straightforward: simply multiply the total active material mass by the desired current density. However, the next step—how to distribute this current between the electrodes—depends on your testing objectives. Typically, in asymmetric configurations, the same current flows through both electrodes during GCD, ensuring that both are subjected to identical current conditions, even though their individual mass loadings differ.

It is important to consider whether your primary goal is to evaluate the full-cell performance or to probe the behavior of each electrode under specific conditions. If you wish to maintain a consistent current density relative to each electrode’s mass, you may need to adjust your approach or clarify your reporting. Otherwise, running the test at the calculated total current (6 mA) will allow you to assess the cell as a whole, with each electrode contributing according to its mass and capacity.

I hope this helps clarify the relationship between current density, total current, and electrode mass in your setup. Please let me know if you have further questions or if you would like to discuss specific test configurations in more detail.

Best regards,

Kaushik