Thread for new battery breakthrough PR releases

Who's up for some fresh new quality battery porn!?😃 🤓
On the topic of Sany Monro, here is his latest video discussing Lithium Sulfur with Zeta Energy.

Looks like this lithium-sulphur battery technology is set to blow away traditional lithium-ion and even make it cheaper at the same time by using cheaper more abundant materials and smarter manufacturing methods, they even have a fast process of growing their own nanotubes.
I don't know why but I thought lithium-sulfur was the dodgiest looking until I watched this video and it totally flipped my opinion of it to excited and expecting to see it soon, which is far more than what I can say about anything else.
 
TheBeastie said:
Who's up for some fresh new quality battery porn!?😃 🤓
On the topic of Sany Monro, here is his latest video discussing Lithium Sulfur with Zeta Energy.

Looks like this lithium-sulphur battery technology is set to blow away traditional lithium-ion and even make it cheaper at the same time by using cheaper more abundant materials and smarter manufacturing methods, they even have a fast process of growing their own nanotubes.
I don't know why but I thought lithium-sulfur was the dodgiest looking until I watched this video and it totally flipped my opinion of it to excited and expecting to see it soon, which is far more than what I can say about anything else.
Click to expand...
the guy sounds like Arnold
 
At 18:40, Munro mentions no metals and no oxides, so it should be virtually fire-proof in all failure modes.
No Cobalt, Nickel or Manganese, so...virtually no practical limit on raw materials being available.
Sounds good so far...

drexel.edu

Breakthrough in Cathode Chemistry Clears Path for Lithium-Sulfur Batteries' Commercial Viability

America’s growing demand for electric vehicles (EVs) has shed light on the significant challenge of sustainably sourcing the battery technology necessary for the broad shift to renewable electric and away from fossil fuels. In hopes of making batteries that not only perform better than those...
drexel.edu drexel.edu
 
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A-DamW said:
A few more details I found on the Amprius cells:
amprius.com

Silicon Anode Lithium Ion Batteries | Amprius Technologies

Amprius Technologies leads the way in battery innovation with silicon anode lithium-ion technology. High-performance, reliable & scalable. Check our solutions.
amprius.com amprius.com

Looks like they are fairly safe too:

Powerful Battery Cell Nails Military Safety Test

Powerful Battery Cell Nails Military Safety Test
www.nationaldefensemagazine.org www.nationaldefensemagazine.org

I have not found anything about lifecycle tests.
Click to expand...

They made it clear that it didn't trigger TR from nail pen, as many other pouch cells will also achieve. This should not be confused with TR behavior being safe or unsafe, as no TR safety behavior was shown. That nail pen setup with the faceted nail tip which cuts like a broadhead is easier to pass with than a round ground nail
 
Twice the energy density of Li-Ion 2170.
If a battery pack in a Tesla 3 series weights 1300 lbs, can one imagine cutting vehicle weight by 650 lbs for even greater range due to reduced vehicle weight? Incredible and exciting.
 
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amberwolf said:
Well, the battery pack's weight isn't even nearly all cell weight, so it wouldn't cut it in half. ;)
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Good point and thanks for the clarification.
Would love to see an analysis because perhaps you concede the cell weight will drop in half and potentially, cell density is greater than shell/case density of the battery which will also shrink by 1/2 in volume.
Another complementary factor is vehicle design and packaging. The vehicle can be shrunk in size and even reduced in structural strength no longer needed to house a 1000+lb battery. So I believe net save will be 1/2 in current battery weight or perhaps even more if vehicle packaging is factored in. Whether full EV or hybrid, weight has been a big challenge affecting power/weight ratio. And of course, this weight could even be conserved for a much more powerful battery for coveted range and fewer charging cycles for even more battery life.

Taking a Tesla 3 series, consider removing 500 lbs and freeing up the space that current battery cells take up. Would take the car to the next level.
An exciting evolution in battery design. I have a friend in silicon valley who works in this field who says, there are known ways to improve energy density and known battery materials to accomplish this end outside of solid state and the headwind mostly is manufacturability. He said technology moving forward will knock down these manufacturing hurdles, like 3D printing of particular alloys and more battery advances to come.
An exciting time in EV advancement. 30 years from now, EV landscape will be unrecognizable.
 
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Wattman said:
Twice the energy density of Li-Ion 2170.
If a battery pack in a Tesla 3 series weights 1300 lbs, can one imagine cutting vehicle weight by 650 lbs for even greater range due to reduced vehicle weight? Incredible and exciting.
Click to expand...
500Wh/kg at C/10 !
380 Wh/kg at C/5…. With burst ability of 6C
so more like <50% better energy density than 2170 …for a useful traction pack.
…Very good, but not incredible.
 
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Hillhater said:
500Wh/kg at C/10 !
380 Wh/kg at C/5…. With burst ability of 6C
so more like <50% better energy density than 2170 …for a useful traction pack.
…Very good, but not incredible.
Click to expand...
Hillhater, do you have the Wh/kg for a Tesla 21700 pack or you going off middle of the road 21700, more generic cells in your assessment?
Thanks
 
Not “pack” data, but cell level info is available ..18Wh and 67.5 gms for the tesla 2170..= 266 Wh/kg.
also “Clean Technica” reported this..
”The Tesla Model 3 pack weighs 1,054 lb (480 kg), giving the pack gravimetric density of 168 Wh/kg. Essentially, the pack energy is the same as the heavier (1,300 lb) Model S P85 pack….….There are 4,416 cells in a 46p, 96s arrangement”
So that implies 298 kg of actual cells, and 182kg of. “ other stuff”. to complete the pack
so cells make up 62% of the total pack weight.

Tesla Model 3 & Chevy Bolt Battery Packs Examined - CleanTechnica

Since the Tesla Model 3 and Chevy Bolt were introduced, there has been considerable interest in the heart of their performance, the battery packs. These two cars have been pivotal in introducing lower-cost long-range electric transport.
cleantechnica.com cleantechnica.com
 
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Hillhater said:
Not “pack” data, but cell level info is available ..18Wh and 67.5 gms for the tesla 2170..= 266 Wh/kg.
also “Clean Technica” reported this..
”The Tesla Model 3 pack weighs 1,054 lb (480 kg), giving the pack gravimetric density of 168 Wh/kg. Essentially, the pack energy is the same as the heavier (1,300 lb) Model S P85 pack….….There are 4,416 cells in a 46p, 96s arrangement”
So that implies 298 kg of actual cells, and 182kg of. “ other stuff”. to complete the pack
so cells make up 62% of the total pack weight.

Tesla Model 3 & Chevy Bolt Battery Packs Examined - CleanTechnica

Since the Tesla Model 3 and Chevy Bolt were introduced, there has been considerable interest in the heart of their performance, the battery packs. These two cars have been pivotal in introducing lower-cost long-range electric transport.
cleantechnica.com cleantechnica.com
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Great info Hillhater, thanks.
A battery and overall vehicle weight comparison would be an interesting exercise. Of course the 'other stuff' as you write shrinks in volume as well.
Perhaps unexpected that the cells only make up 62% of the total weight pack versus closer to 90-95% or so for an ebike battery. Of course cooling is a big factor contributing to the other stuff and that cooling decrease may not be linear because the battery Wh would in theory be the same. Unknowable without a real deep dive because of course different battery chemistry has a different heat signature.
 
Apart from "Breakthroughs" and "research projects", does someone knows what is the best wh/kg or wh/L that is already mass produced and available right know to purchase for ebike use ?
 
Hillhater said:
260 Wh/L is about best commercially available in the 18650 or 21700 cells.
Click to expand...
I think you mean Wh/kg not Wh/Liter, as many commercial cells are >700Wh/liter.
With respect to Wh/kg though, lots of large scale production automotive pouch cells >300Wh/Liter today and amazing cycle life.

Wh/kg is always nice, but seeing it with a low specific impedance is what most impresses me.
 
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