Donghoon Lee

7 Questions 13 Answers 0 Followers

Questions related from Donghoon Lee

Is the positioning of the reference electrode also important when measuring potential?

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 2,623 25 View

Chemical stability of LTO electrode ?

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 2,506 3 View

What's the color of Lithium-intercalated graphite?

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 2,387 10 View

Relationship between cycle retention and overall capacity of a cell?

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 3,039 3 View

What's the decreasing line in the EIS(electrochemical impedance spectrum) at high frequency region?

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 3,048 12 View

Silicon contamination on graphene by cvd

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 4,793 6 View

What are the composition of air plasma?

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 1,475 6 View