I'm reminded by those dendrites of The Andromeda Strain (1971) kzitem.info/news/bejne/uYZv3WqjgKFeoHo
@OOTurok
Ай бұрын
There are ways to limit or out right prevent Li-dendrites from forming in the 1st place. 1... never fast charge a Li-ion battery. Dendrites mostly form in Li-ion batteries when they are fast charged, because the greater the increase in current, the more often dentrites form, because of the increase in energy. Dendrites almost never form when the battery is charged slowly at low Amps, & the ones that do easily break down because the low energy current allows for the lithium to redisolve. 2... never boost charge a Li-ion battery, for the same reasons above, because boost charging is a form of overcharging the battery in order overcome the internal resistance. Voltage drops as a battery discharges, & the more the battery is discharged, the greater the internal resistance of the battery becomes, requiring an increase in voltage & current to recharge. 3... never let a Li-ion battery drop below 20% capacity before recharging, eliminating the need to boost charge the battery. Once a Li-ion battery drops below 20% charge capacity, the charger has to boost the voltage & current to overcome that resistance. The problem is in practical terms... how many people maintain these Li-ion batteries like this, especially in EVs? And particularly with EVs... is it logistically feasible for most people to follow those 3 rules?
@tggraham3321
29 күн бұрын
Great comment. The missing price of this is what is considered fast charging for each type of battery. Surely they aren't all the same. Does size of the battery really change what is considered fast? Just because I have a lot of batteries (high capacity [ah]) needed to be charged does that necessarily change how dendrites form in them? I don't think so. Is tbis getting so much in the weeds that it doesn't matter with existing tech? Idk. Much more to be explored I think.
@OOTurok
29 күн бұрын
@@tggraham3321 Yes battery size does effect what is considered fast charging, because the smaller the battery, the less voltage that is needed to pass current through it, & the less energy they will hold. Plug a cellphone up to a 240 V charger & it will explode. Also, the smaller the Li battey, the less likely dendrites will form in them. It' is far less likely for them to form in small single cell Li batteries, because they hold very little energy to start with compared to EV batteries. Cellphone batteries for example are not very prone to dendrite build up. They usually catch fire from overcharging which overheats the battery causing an external rupture, that exposes a short to the circuitry. All your divice chargers are designed to regulate the proper amount of voltage & amperage for the device they are designed for. They will automatically regulate a normal slow charge when the battery is above 20% capacity, & will not try to boost charge unless the battery is completely discharged. Below 20% capacity... these chargers will automatically run a higher amp fast charge or boost charge through it unti the battery is above 20% capacity. EVs are the real danger here, because their batteries hold a massive amount of energy... & any time they are fast charged or boosted... there is a high risk of dendrite formation, especially when boost charged. But the problem here is most EV owners are not aware of how to properly maintain & charge these batteries, & it is often not logistically feasible for most people to do so. Most EV owners cannot afford to have their EVs sit for 8 - 10 hours on a slow charge, & resort to pluging into a rapid 1 hour Tesla charger at a gas station. Best case scenario, this just ruins the battery's chemistry faster from dendrite build up requiring full replacement after 3 - 5 years. Worst case scenario a short occurs & your EV becomes a pile of toxic ash. Another factor to consider is ambient temperature. When it's cold outside, Li-batteries can handle taking a fast charge better with minimal dendrite build up. Still not ideal, but theres less degradation. When it's hot outside, even with their internal cooling systems, the potential for dendrite build up during fast charging, is through the roof.
@drewofearth6681
4 жыл бұрын
Hmm. A very interesting topic, but I would have appreciated a bit more explanation as to what was happening on screen. For example, when dendrites are forming on two pieces of film (both of which are new to me), I would like to know which of the films you just introduced me to. Jargon is unavoidable, and I get that; however, I struggle to follow what this video was teaching because both "the" lithium dendrite problem and (presumably) the solution deserve equal amounts of basic explanation. TL/DR: Pointy talky is good because all viewerships should be treated as a blank slate.
@RBMDragon
3 жыл бұрын
Considering that applied field strength (i.e. voltage) affects the cycle life of a battery, is it safe to say that the local increase in field strength is a factor in dendrite formation?
@2012Fractal
2 жыл бұрын
It is the main parameter
@OOTurok
Ай бұрын
Yes... 100%
@luislongoria6621
2 жыл бұрын
It seems like the very method used to purify Lithium causes crystalline growth inside the dissolved electrolyte. Unless there's some other mechanism at work like the presence of phosphate Solubulizing Bacteria in extracted brine chelating the Lithium OR simple electrochemical reduction of the electrolyte. I've always been a fan of H.G. Wells 'War of the Worlds', so I'm a bit partial to the bacterial contamination angle. Doesn't the spike look like a plant sprouting from a seed?
@markjmaxwell9819
3 жыл бұрын
I'm never going to use my phone or PS4 again...... Tesla vehicles are among the safest on the road... The Aerospace industry in the US has been limiting military applocations for lithium -ion batteries... 😂😂😂😂🖕🖕
@rashmiranjannayak3251
2 жыл бұрын
Nice presentation but more to done for dendrite problem.
@tarunce995
4 жыл бұрын
This depth of interest shows most people looks forward for greener future. I am sure no other tech topic has shown so much hype than electric battery tech.
@MaheshKumar-lq1xm
3 жыл бұрын
Videos are brilliant
@MaheshKumar-lq1xm
3 жыл бұрын
As of July 2021 this is not a problem. Harvard had solved this issue. Just FYI for others.
@Gourab__paul
3 жыл бұрын
could you please share a link ?
@PotionsMaster666
4 ай бұрын
How did they do it !?
@solidbattery9956
4 жыл бұрын
Really nice channel
@solidbattery9956
4 жыл бұрын
Good video
@nick421
3 жыл бұрын
Electric cars are the least eco friendly transport hands down. Toxic as fuck. But muh carbon
@pantheratigris9963
3 жыл бұрын
Yes they actually use some of the most rarest elements on earth to tackle conventional vehicles and that isn't actually eco friendly
@madtscientist8853
4 жыл бұрын
We need to STOP swimming up stream and making life harder. use the Rivers energy as if it was our own we think resistance is the key to energy use the dendrites and the material that they make to make a better battery
@testaccount8921
4 жыл бұрын
@Ken Personal Spaces before punctuation is wrong. Your use of commas is also mostly wrong. "Rivers" shouldn't start with a capital letter and it's missing an apostrophe.
@testaccount8921
4 жыл бұрын
@Ken Personal It makes you look either stupid or mentally ill.
@pantheratigris9963
3 жыл бұрын
OH Nikola Tesla, sir bring in back ur Tesla Tower
@madtscientist8853
3 жыл бұрын
@@testaccount8921 I'm shore it does and I'm also shore that it make you look stupid and or dumb. When you can not look past the Spelling and Punctuation errors to the main idea. Just like how everyone could not look past Nicklaus teslas Personality and Personal problems and see his ideas for what they really are. Congratulations thanks for Creating me like just like Everyone created Nicholas Tesla You should be proud of yourself how does that make you feel.?!@#$ sorry I forgot I don't care.
@madtscientist8853
3 жыл бұрын
@@testaccount8921 This is the very reason why people do not speaker up or even let there Voice be heard because of people like you pushing them down just because they don't fit into your world. You can't look past what I'm not. To see what I am. You should be ashamed
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