Graphene batteries developed, but 60 wh / kg, charge in 15s

[sicetaitsimple]

You know how to read? Do you know what "could" or "maybe can" mean, and what "wait and see" means?

The promise, it is not me who makes it, but the manufacturers. Wait and see.

[Obamot]

It's maybe you who don't know / don't want to read!

The builders, who? Connections ?

I don't see a single manufacturer breaking free from the laws of physics. It was the journalist who fantasized about graphene.

Until proven otherwise, graphene is only one atom thick (otherwise it wouldn't be called graphene ...) CQFD

Answer my questions from my penultimate post, well, no, I don't think you'll answer them because you don't know the answers!

Otherwise it's been a long time since you would have understood what I mean, and you would not answer: “promise of construuucteeeuurs"

It's too bad

[sicetaitsimple]

Otherwise it's been a long time since you would have understood what I mean, and you would not answer: “promise of construuucteeeuurs"

You might not have figured out yet that I don't care what you mean ....
In addition to hospitals, journalism or publishing, do you also advise or guide companies that develop electricity storage?
I repeat, XXXXXXX

Moderate by Remundo

[ENERC]

Thank you for this inventory, which corresponds roughly to what I had in mind (even if I don't have an EV, I'm very interested in it).

Coming back to the thread and to the article cited in the first post, we can therefore clearly see that there is an optimum to be found between, on the one hand, the capacity of the charging terminals to deliver high charging powers and of on the other hand, the vehicles' capacity to accept them (without the charging power falling too quickly as the charge progresses).
Maybe hybrid Li-Ion / Graphene storage systems can help. Wait and see.

Lithium holds the 2Cs well in charge - therefore 120 kW for 60 kWh. This is what Tesla and Porsche do (Porsche is in 800 V).

We can ask ourselves the question of Graphene for braking regeneration, because it is a lot of cycles. In my opinion, that makes sense for a city bus that spends its time in acceleration-braking, but less on a truck or a car.
When I brake, it rarely exceeds the 30 kW sent to the battery. At worst, we keep a little energy in the mechanical brakes.

I do not see the interest of Graphene either to have more power. Tesla is already releasing more than 400 kW in dual motor. I don't see the point of switching to the anti-G suit . it is already growing incredibly hard.

[Obamot]

Otherwise it's been a long time since you would have understood what I mean, and you would not answer: “promise of construuucteeeuurs"

You might not have figured out yet that I don't care what you mean ....
In addition to hospitals, journalism or publishing, do you also advise or guide companies that develop electricity storage?
I repeat, take the pills etc ....

Ah, still no technical debate, as was to be expected And always so nice and elegant!

Me your words leave me indifferent. I thought with your arrogance, you were better than that. No matter how much I think about it, I don't remember you posting anything interesting. Except maybe asking me “to consult a shrink”

You intervene well in all subjects to display your “science”You too, but when you scratch a little, damn it ...
Oh no, you're good at copying / pasting, that's about it

You called me the king of the c ... I know very well what I'm talking about about graphene, and you are very far from having any quality to judge me. Here you are on the troll list, and I thought you were posting like you were part of a lobby! After your phenomenal blunder on graphene, I think they would have chosen a smarter one ...

[Moindreffor]

I know very well what I'm talking about about graphene

Warning!!! you have a science well in front of you, the guy who knows everything from graphene to urine ph, and who can heal you just by making your evening meal menu
but who let it out again ???

[sicetaitsimple]

Lithium holds the 2Cs well in charge - therefore 120 kW for 60 kWh. This is what Tesla and Porsche do (Porsche is in 800 V).

We can ask ourselves the question of Graphene for braking regeneration, because it is a lot of cycles. In my opinion, that makes sense for a city bus that spends its time in acceleration-braking, but less on a truck or a car.
When I brake, it rarely exceeds the 30 kW sent to the battery. At worst, we keep a little energy in the mechanical brakes.

I do not see the interest of Graphene either to have more power. Tesla is already releasing more than 400 kW in dual motor. I don't see the point of switching to the anti-G suit . it is already growing incredibly hard.

I agree, for the passenger cars we do not see today which would really be a decisive advantage. Then it will depend on the evolution of the costs of the various technologies.
I was rather thinking of specific applications of the type already mentioned urban bus, or anything that has a "shuttle" character with high rotation rates but little unit distance traveled.

[Christophe]

Okay friends ... we'll have to go back to basics ...

If a battery charges in 15 seconds ... this necessarily means a VERY VERY VERY STRONG charging current ...

Small table corner calculation:

Let us take a 1008 Wh battery under 48V, i.e. a 21 Ah battery (48 * 21 = 1008)

If this battery charges its 15 Wh in 1008 seconds, we have a power of 1008 * 3600/15 = 242 kW or under 48V approximately 5040 A ...

There is not much that can withstand 500A already (a "professional beefy is 250 A" welding machine) ... then balance 5000 A in a battery ... must I draw you a picture?

Even a nuclear power station does not work under 5000 A !!

We must therefore remain a minimum SERIOUS !!

The amperage obviously depends on the voltage ... but the power to be supplied depends on the capacity.

A recharge under 15 s means a charging current of 5040/21 = 240C ... impossible ... the best current batteries are at 100C (lipo graphite ... graphene?) In discharge and with a lifespan that does not exceed not 100 cycles ...

This value of 240C does not depend on the characteristics of the battery (we find 3600/15 = 240 ...) ... a recharge in 15 seconds therefore means a charging current of 240 times the nominal capacity of the battery ... whatever the latter ...

[Obamot]

- “You don't have the basics ”

Orelsan. -

[A.D. 44]

Hello,

Tsssss ... Ah, the speech changes!

But where have the graphene batteries gone to power urban and orbital buses? “Teacher”?

Where is the link of the “promise of graphene batteries”Pfouit, flew? !

Indeed, the speeches change ...

https://forums.futura-sciences.com/envi ... gie-4.html

Graphene, a subject already discussed some time ago.