REVOLUTIONARY Silicon Anode Battery Tech | LeydenJar Update
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- เผยแพร่เมื่อ 21 มี.ค. 2024
- Listen to my conversation about LeydenJar's unique 100% Silicon Anode batteries with their Senior Business Developer Tim Aanhane. Using technology borrowed from the solar industry, Dutch battery company LeydenJar is developing 100% silicon anodes for lithium-ion batteries that boast energy density gains of around 70%.
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NOTE: All of the content found in this video is based on my own research and should NOT be regarded as financial advice. I am not a financial advisor, and this is NOT in any way a recommendation or offer to buy or sell securities. While the information in this video is believed to be accurate at the time of recording, no guarantees are being made about the accuracy of the information presented in the video. As of the recording of this video, I am NOT invested in LeydenJar, nor any other company mentioned in this video. - ยานยนต์และพาหนะ
I was looking down when the video started and I thought I was listening to Sean Connery. 🙂
Well, this guy definitely sounds Dutch to me, where Sean Connery sounded like a Scot. But the way they both handle the 's' sounds as a partial 'sh' is similar
800...1000Wh/l on a cell level is absolutely insane! usually the gravimetric energy density is half of it (roughly estimated) which means 400...500Wh/kg. that is even good enough for short distance electric aviation for up to 2 hours.
Ahh … I’d be careful re volumetric to gravimetric conversion.
Silicon anodes very thin, so fit more cathodes, more current collectors in cell. That’d be heavier. I believe it’s the metal current collectors are most weight, but guessing.
Well, Leyden Jar are claiming a 70% Wh/L improvement for their stack over some other poorly defined albeit practically relevant anode energy density number. Leyden Jar seem to be saying that 800ish (1350/1.7 = 794) Wh/L is a representative number for today's anodes.
By that math you might be overestimating the energy density improvement that follows from this innovation.
None of this matters that much. Graphite anodes are already at their limit. Energy density improvements will require new anode chemistries and/or thinner anodes, which save weight. Silicon is a great candidate because there is plenty of room to improve lithium ion loading and reduce weight at the same time. Silicon anodes can beat graphite on all of the critical operational parameters without sharply increasing cell/battery costs because cells and batteries based on silicon anodes will use less material per kWh of stored energy.
So far, I have ignored the costs and efficiency of production of silicon anodes. The remaining questions over this are: i) whether the specialised vapour deposition process can be scaled up to massive volumes and leading production rates and ii) whether it will be economical compared to the alternatives.
@@chris27gea58 i think it will be on the cheap side. i suspect that they produce a plasma with a kind of 'microwave oven' to create the right sized particles of silicon. i guess that is a similar approach than Amprius uses for their silicon anode which resulted in a production of 1300Wh/l and 500Wh/kg battery. they call it nanowires. on the microscope it looks like a tight forest of cypress trees
This sounds incredibly interesting but those cycle life numbers should give us pause. I hope that further development will permit cells/stacks/batteries that offer both long cycle life and high power density (fast charge and discharge rates).
You forget that double the capacity requires half the recharges for the same name plate capacity. In my honest opinion a battery shouldn’t be rated in full depth of discharge cycle life, it should be be in life time energy storage.
Pure silicon anode, 70% energy density gain, and a power density gain, that is amazing. An Aptera can drive 2000 miles (!!!) with pure-silicon-anode lithium-ion batteries on one charge. The cycle life is a bit uncertain (more than 500 cycli, how much remnant energy density??). The targets in this market are always on the move.
Chemical vapor deposition requires vacuum equipment.
I would be very interested in how they can scale this and at what cost/$kwh.
Great question.
Quick draw down cryogenic vacuum technologies are on the pipeline, making these things scalable to the GwH scale (at least on the vacuum side) trivial
Talga Group is making a silicon anodes that's much cheaper than using CVD. It's using a mechanical / nano process.
Sounds fantastic, but aren’t others using similar methods to make silicon anode? Even for silicon coated graphite.
is there any advantage over the tech from Enovix or Amprius ? a comparison would be great.
Can you give us an update on QuantumScape??
will it be scalable?
if they can't scaled to 100s of gigawatt a year then it's not going to do much to move the needle on battery storage.
Everything can be scaled by a factor of 2, by doubling the equipment. The real question is whether you get more than 2x for 2x the infrastructure investment
Could be good for phones and planes
Can it work with sodium ion?
Nope, current Sodium ion technology relies on perchlorate as the electrolyte which absolutely decimates metallic silicon. I’m not saying it’s impossible, but not on the current understanding of sodium ion batteries.
This sounds really promising! I haven't heard the watt hours per.litre measure before. Is this another way of saying watt hours per kg? (as if the litre was a kg of water)
Wh/L is a common volumetric energy density measurement that measures the space to active energy. In many ways it is more important than gravimetric Wh/kg.
No. It is the best measure (and thus metric) we have for the practicality of a functional battery. Volume is an ultimate deal breaker. The small weight penalty we see with EVs today (due to the weight of the included battery) is a relatively minor inconvenience but, if in addition to that penalty EV batteries (of a sufficient capacity to be considered useful) were so large that only a comically oversized vehicle could accommodate them then EVs would no longer even be a realistic option.
Note:
(1) Wh/L is not an especially useful metric for subcomponents like anodes or even cells (except for ballpark comparisons) but it is of the utmost importance for packaged batteries and ever more so for battery packs.
(2) Of course, it is possible to perform a rough conversion from weight to volume or vice versa after all details of a cell and battery are known but you don't need to. All you need to do is measure its physical dimensions and/or weigh it.
@@Cleanerwatt That makes sense. Thanks!
@@chris27gea58 Thanks!
i like the name lydenjar. however the original layden jar was a capacitor and not a battery.
it was invented by some german scientist but a professor from the leiden university in netherland discovered that there is a circuit ("circle") to be closed to make it work and to get shocked.
another scientist closed the circuit with bunch of monks standing in a huge circle and holding hands and jumping when the got shocked at the same time. hence the name "circuit".
The term battery refers to stacking, not the cell. Technically a bunch of series capacitors is still a battery.
Same as a bunch of artillery is a battery, it’s literally the definition.
Pamela Anderson battery?
silicon != silicone
If it can be mass produced, demand would be …enormous.
Generic version is the hoottery
if i am right, the same tech could be applied to sodium ion batteries. it would be great if that could increase the energy density of sodium ion batteries by 50% as well which would push current sodium ion batteries from 160Wh/kg to 240Wh/kg which would make medium to almost long range cars a lot cheaper.
Unfortunately no, all current sodium cells use perchlorate as the electrolyte, which turns metallic silicon into Swiss cheese.
We’ll be at 2kwh/ kg by 2028 at this rate