Tesla 4680 Battery TEARDOWN: Dry Cathode Myth or Magic? (Cybercell Secrets!)

Рет қаралды 12,318

4 күн бұрын

In a recent Munro Live KZfaq video, Sandy Munro and Tom Prucha discussed some new 4680 Cybercells details including a Cathode change that they are confident signals a dry process manufactured cathode. So, has Tesla finally solved the dry process on the cathode?
Munro Video: • Inside the Cybercell! ...
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Image & Video Clip Sources:
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Data Sources:
Munro Video: • Inside the Cybercell! ...
www.hankyung.com/article/2024...
x.com/Jamesma1109/status/1800...
Gen 1 4680 Teardown: iopscience.iop.org/article/10...
eepower.com/news/lg-chem-to-b...
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Пікірлер: 31

@Dm0stFin3sT 2 күн бұрын

I never worked directly on this project while at Kato but I was told 2 years ago that the main blocker for dry cathode is the hardness of the metals on the calendaring rollers. Anode is easier because copper is soft, but cathode metals have a tendency to damage or dent the rollers during manufacturing. This causes defects all over the electrode making it useless and then the calendar rollers must be replaced which takes FOREVER. But this is just hear say Idk for sure Edit: Manganese is the hardest metal in the NMC trio so connect your own dots there

@andrewsaint6581 Күн бұрын

They mentioned pitting rollers some years ago.

@wolfgangpreier9160 Күн бұрын

Ceramic or ultra hardened rollers could help but they are very expensive and have other disadvantages in their even-ness. Which may negate the advantages a dry process brings.

@Dm0stFin3sT Күн бұрын

@@wolfgangpreier9160 yes I believe this is why Maxwell Technologies never expanded past the small scale prototype

@eyesuckle 19 сағат бұрын

Thanks for this. I have often wondered what it is that is holding up the dry electrode manufacturing process. Just like I'm wondering what is holding up the semi truck. And the lithium refinery. I'm always surprised that nobody asks these direct questions during the various presentations that Tesla holds each year.

@peterjohn5834 2 күн бұрын

Great research and report.

@peteregan3862 Күн бұрын

Tesla may be buying cathode rolls to keep up with production, but it is still investing in cathode production - a truckload of electronics panels was delivered to the cathode plant in Joe T's July 1 video.

@williampmcd8548 2 күн бұрын

Please do a talk about the recently filed TSLA HVAC cleaning/sterilizing patent. Thank you.

@peteregan3862 Күн бұрын

Tesla has MY Juniper ramp. Tesla maximising cell production while it ramps dry electrode NCA cathode - no issues with NCA for MS/X. The Juniper refresh including 800V/48V needs to go through the entire fleet. Would not surprise me if Tesla is testing MY juniper production equipment at Austin for rapid sequential roll out to Fremont, Berlin and Shanghai.

@georgepelton5645 2 күн бұрын

I am guessing that Tom and Sandy are not aware of Tesla’s contract for cathode rolls from a cell manufacturer. These are almost certainly wet process cathodes. I also am skeptical that there actually is no Manganese.

@Cleanerwatt 2 күн бұрын

Most likely you are correct. The lack of Manganese doesn't seem to make any sense, so I think skepticism is warranted.

@kazedcat Күн бұрын

The electrode contract could be LFP cathodes. Tesla has plans to also manufacture their own LFP batteries.

@robinholmes785 2 күн бұрын

Well done 👍I agree that we should be very cautious about Munro’s claim that the latest CyberCell has a dry cathode. Seems a very odd claim considering all the evidence pointing in the opposite direction! I have been concerned with Munrows impartially recently. He seems to have got unpreceded amount of access to Tesla's top people and the factories. What did he agree in exchange?? And if he knows the chemical competition of the cells, why doesn't he know if there is PTFE in there??

@Cleanerwatt 2 күн бұрын

Exactly!

@ThWiedermann 2 күн бұрын

How come you and James Ma claim the use of natural graphite in the anode vs. the Munro team and Jordan aka The limiting factor who got his information from UC San Diego, the use of synthetic graphite… I try to get my head around this two very different claims. Any thoughts on where this confusion might stem from? Cheers mate!

@lylestavast7652 2 күн бұрын

what's the differences in function ?

@Cleanerwatt 2 күн бұрын

I believe Tesla has been experimenting with both and that both are being used (or have been used).

@kazedcat Күн бұрын

@@lylestavast7652synthetic is more consistent but also more expensive compared to natural. In previous chemistry Tesla has been mixing them to optimize between cost and consistency.

@TheZackrambo 19 сағат бұрын

Is it true that the cybertruck battery pack is not all the way full

@ourv9603 Күн бұрын

Within the last couple of weeks Elon let slip that the battery team is working on a new bigger battery than the 4680. No more is known at this time. !