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Questions related from Donghoon Lee
Hi. I would like to design 3 electrode system for a battery to investigate anode and cathode separately with the voltage reference of Li/Li+ Because the battery itself is pouch-sealed, it cannot...
22 April 2020 8,586 0 View
Hi. I learned the position of reference electrode is important as it is related to solution resistance and it should be as close to the working electrode as possible to reduce this...
09 April 2020 2,666 25 View
Hi. I made a NMP-based slurry of LTO (contained pvdf as binder, carbon black as conductive material) and stored it in a dry room(moisture free, under 100 ppm) for couple of months. Could I use...
21 February 2020 2,542 3 View
I mean, LiC6 or closer to x = 1 of LixC6. Is it silvery-white like a lithium metal in non-reactive environment?
03 February 2020 2,447 10 View
If the same chemistry of cells with only different designed capacity are cycled with the same C-rate, would the retention of both have the same? I think it will be the same but in my experience,...
16 December 2019 3,114 3 View
I'm trying to analyze my EIS data about Li-ion battery. But I noticed there is a strange data in high frequency region(~100k - 10k) that the Z(im) decreases as measurement frequency decreases. It...
07 June 2019 3,119 12 View
I've used thermal cvd system to synthesize graphene, a system that allows gas flow into quartz tube and controls temperature by furnace. Everytime I make graphene on copper foil, it has severe...
03 August 2017 4,801 6 View
I'm trying to use air plasma to clean surface of TEM grid. I wonder what's the composition of air plasma and how they work. There will be mostly N2 plasma and O2 plasma. Since N2 is quite...
31 July 2017 1,483 6 View
I found some etchmasks commonly used when etching parylene, but it is hard mask like Ti, Cu.. It isn’t proper to my experiment because applying etchmask’s solvent after RIE is too acidic to use my...
09 June 2017 2,333 2 View
