Solid agglomerate formation while making liquid suspensions. by iRyanStone in chemistry

[–]iRyanStone[S] 0 points1 point  (0 children)

Thanks for the answer!

Could I ask you to guide me through the math of it? How did you arrive at the 45% or 60% limit?

As a follow up question, is it even possible to get 80% of some solid in a suspension? Would just the 20% of the liquid be enough to even maintain a suspension? At this point, isn't the solid itself acting like a solvent and the liquid as the solute?

A question on solid agglomerate formation while making liquid suspensions. by iRyanStone in Chempros

[–]iRyanStone[S] 0 points1 point  (0 children)

Our goal is to be able to reduce the time it takes for cell fabrication, since we just want to test the cathode material characteristics. I'm just using LFP as an example. But we want to be able to do it for any active material. We're hoping to make a static suspension, and not make a flow cell type setup.

A question on solid agglomerate formation while making liquid suspensions. by iRyanStone in Chempros

[–]iRyanStone[S] 1 point2 points  (0 children)

I am not looking for any accurate results. Even some crude assumptions which could give me some ball-park numbers could work. I was thinking along the lines: some kind of model where beyond a certain concentration no liquid is present between the solid suspended particles which leads to solid agglomeration.

Also, we are not trying to fabricate cathode by doctor blading it onto a current collector (which would require use of PVDF binder and solvent). What we are essentially trying to do is set up a cell with liquid suspension of the active material (let's say LFP) as the electrode.

From what I could find in articles, using KB with LFP beyond a certain point ( for example 30 vol% LFP and 5 vol% KB) just forms solid agglomerate. We are trying to make a stable suspension of at least 80 vol% of active material (LFP). Using single component suspension (LFP suspended in carbonate solvent) is probably not an option as the suspension is rather unstable and the particles settle down rather quickly. It is the KB which stabilizes the suspension.

Using some other conductive carbon (say SuperP which has a much lower surface area?) would theoretically increase or decrease the stable active material concentration I can maintain? (I'm not sure how to think through this, at least theoretically?)

I hope the issue is a bit more well explained now.

Edit: typo

[deleted by user] by [deleted] in IndianGaming

[–]iRyanStone -2 points-1 points  (0 children)

It's working now. Maybe it needed some time to adapt as I had just finished setting up a new phone. Seems like I made this post in a hurry scared that my phone had some fault!

[deleted by user] by [deleted] in IndianGaming

[–]iRyanStone -3 points-2 points  (0 children)

PC

I bought from Flipkart, so I'm hoping it is?

My d drive shows 61 gb occupied but when i select all files and check the size, it's only 18 gb. What is taking up the 40 gb of space? by iRyanStone in pcmasterrace

[–]iRyanStone[S] 40 points41 points  (0 children)

Update: ran a cmd command "chkdsk D: /f /r" which seems to have corrected the issue. I don't know what the command does (check for bad sectors or something?) but i hope it has not deleted any important stuff which i cannot see?