3-electrode coin cell assembly demonstration (ver. 2022Feb)

Brief tutorial on how to make three electrode coin cells.
The cell design works well for both cycling and EIS. We are continuously improving the process, so there might be updates in the future.
If you have difficulty finding a vendor for the copper mesh, check out precisioneform....
Credit: Jimmy Kuo, Stephen Kang
Special Thanks: Che-Ning Yeh, Justin Rose, Harry Thaman, Will Chueh, ChuehGroup@Stanford, Holizna

[@tangopies]

Thank you! Great video, I actually made one myself in my lab following your video. I used stainless steel mesh and it worked fine :)

[@ThangPVan_]

hi, can i ask you a question? In this video, the author said he used the copper mesh as a substrate for the reference electrode (RE), but I didn't see the RE in his assembly process. Can you point it out for me?

[@tangopies]

@@ThangPVan_ The copper mesh is used as a substrate for lithium, which will be deposited electrochemically (you have to apply low potential (slightly lower than 0 V vs Li+/Li0) between the mesh (working e.) and lithium electrode (counter e.). That will result in dissolution of lithium metal on the anode of the full cell and deposition on copper mesh. And there you go, you have lithium covered reference electrode :) Tip: use current-controlled process, and limit the current to very low values (in the range of 1 uA max or even lower), to decrease growth of lithium dendrites. If you measure the charge that will flow, you can derive how much lithium was deposited :)

[@ThangPVan_]

@@tangopies Hi again, I so appreciate your quick and informative response. I'm just a beginner in this subject, so hope you do not feel bothered when I ask further questions in the near future.

[@tangopies]

@@ThangPVan_ Sure :)

[@TT-lf5hi]

Hi,
If I use enameled copper wire, without any polyimide tape, do you think the epoxy will still be necessary?
Also, adding a tiny blob of lithium on the wire would probably be better than the copper mesh.
Thank you.

[@aliansarihamedani8057]

NIce explanation. Thanks

[@shcrystalz]

This is lithum-metal battery?
In this system, what is the role of reference elecrtode?
Cu mesh?

[@troi818]

Where did you purchase this assembly

[@methely9657]

I know that hand

[@stcroixchristosshollycross]

THANK YOU FOR THE EXPLANATION .WELL EXPLAIN , WAS INTERESTED TO KNOW THE INSTALATION OF CELL BUTTON , I GOT A WATCH CAPACITOR DRAIN COMPLETELY , BUT I RECHAGRE IT WITH LOWEST VOLTAGE IN AIM TO BOOSTER IT AND TRY TO REUSE IT . IF NOT SUCESSFULL ,THEN THE OPTION IS NEED REPLACEMENT NEW RECHRGEABLE BATTERRY
THANK YOU , GOOD WELL EXPLAIN,