Dear Georgii,

It must be obtained into construction:

- Well-done isolation of lithium electrode under membrane from air,

- To made into coin positive electrode some valve pretected from quick air migration and water migration.

You may check as sample some  existing zink-air elements.

Thank you, Mikhail.

You welcome. If you not against to discuss more about lithium cells, my e-mail is [email protected]. I will be glad to help you if I can.

i will also need li air test cell for testing membrane, can u help me how to make a test cell for testing membrane....?

Dear Usaid,

For testing membranes itself I think it is possible to use metallic lithium pressed into nickel or stainless steel, put it into tight  contact  with membrane. You also need some cathode (for example, porous carbone material). For avoid a moisture may be it is better to palce a cell into dry box.

Thanks Mr.Mikhail.

If i use coin cell kit, will that be alright? means for cathode. it is easy to buy a kit rather than make it in the lab.

Plz reply

Thanks

Dear Usaid,

If you will use coin cell kit, you will make a closed system. For air lithium cells you need a source of air. 

So you must somehow midifacate a cell kit. Zink-air batteries have in construction a vent into cathode part. 

So if you have a goal to study just a different membranes it is better to use opened electrochemical cells into dry glove box (with air but not an argone inside).

Thanks Dr.

But what do you mean by open electrochemical system? Do you mean coin cell with holes at the cathode side?

Secondly, I am planning to test the membrane as a separator in lithium air battery in argon glove box under less than 1ppm O2 and moisture conditions. As you know, its difficult to get better result with lithium air battery in ambient condition. So i thought, i should proceed with O2 and moisture less environment because my goal is to test a membrane performance in LABs, not to optimize its performance.

Is it good idea? 

You can use the closed system approach described in the following papers to effectively characterize lithium peroxide formation and decomposition. It is easy to make these cathodes and certainly avoids complex gas delivery systems and also avoids costly Li-oxygen cell construction.

It would also be a great system to characterize oxygen crossover by designing an oxygen blocking separator.

Article Lithium Peroxide-Carbon Composite Cathode for Closed System ...

Data Chemically Synthesized Lithium Peroxide Composite Cathode fo...