Aziz Ahmad

I am not sure if you are asking about aqueous based lithium batteries. Generally, these batteries are equipped with organic solvents and the water contact angel of electrodes might offer limited insights on their electrochemical performance.

Generally speaking, the water contact angel reflects the degree of hydrophilicity of electrodes. If these electrodes are for aqueous based batteries, their high hydrophilicity is beneficial for facilitation of electrolyte infiltration, which reduces ion diffusion distance and improves both capacity and rate capability.

Dear Tianyu Liu,

thank you for your comment. I am talking about lithium ion batteries in which the LITFSi electrolyte is used. I have prepared flexible and free-standing film composites with different fractions of SWCNTs and organic polymer. for example the composite film with 20 wt%, 30 wt% and 40 wt% SWCNTs by weight. the composite film prepared with 20 and 30 wt% SWCNTs showing the hydrophilic nature and their water contact angle is

Aziz Ahmad

I believe hydrophobicity should be beneficial for electrolyte infiltration given organic solvents are usually immiscible with water. If you have access to a pycnometer measuring contact angle, you can use the electrolyte as the liquid of interest to measure the contact angles of all your electrodes. It provides more straightforward and meaningful data than water.

Dear Tianyu Liu! Yes, your logic is clear and accurate regarding the hydrophobicity application for better performance. I also read more literature and my conclusive remarks is matching with you. Your assistance helped me a lot and the things are clear now. Thank you for your nice attitude.

Aziz