eestor ultra/super capacitor

eestor ultra/super capacitor

I believe the eestor capacitor would allow an electric car to charge in about 5 minutes, have a driving range of 250 miles and have a speed of about 80 miles an hour. You can Google Tesla & super capacitors for information. You can also YouTube eestor and then scroll to the very top for more information on eestor.

Brian H | 29 maggio 2011

For that range, the caps would have to be so big there's be no room for anyone but the driver in the car.

The true value of caps is their ability to buffer peak and spike loads in and out of the batteries.

Timo | 29 maggio 2011

EESTOR is a scam. Has been a scam for a while.

DHrivnak | 30 maggio 2011

I do believe EESTOR is a scam as they have been 3 months away from an offical launch for at least 2.5 years now. As a general rule when it is too good to be true it is smoke and mirrors.

Brian H | 1 giugno 2011

Here's a May 2011 update:
The smoke is thinning, and the mirrors are smudged.

joe.gruber | 6 giugno 2011

Sorry, I am a bit late to post...
Well, all might be possible, (range and charging time etc.) But I see the problem to transfer such an enormous amount of energy in such short time.
Any installation using the grid of an ordinary household wires would be stressed. Who has 100 Amps or more available?!

Ramon123 | 8 giugno 2011

The best info I have about EEstor is 1) it is not a scam, in the sense that anyone has gained anything from the effort of the EEStor company. 2) the CEO of ZENN Motors has taken leave to help EEStor in any way he can to bring their device to market. Thus he
has apparently seen the device work and believes in the technology. On the other hand, the defense giant that had a stake in EEStor has not stepped forward with any more cash, meaning that apparently they don't think the device will ever work. I do not understand why the Dept of Energy has said nothing about all this.
Quite frankly, the EEStor story has yet to be told. At this point,I don't believe what anyone says, except that it's obvious that the device is not being produced at this time and not finished. The last heard from EEStor's chief is that "We are so close."

Timo | 8 giugno 2011

@Ramon123 The last heard from EEStor's chief is that "We are so close."

That's what they have been saying for last few years, with no result.

daniel1948 | 13 giugno 2011

What convinced me that EEStor is a scam was when they announced that they had reached the milestone of demonstrating the purity of the material they intended to use as the dielectric for their capacitors, and at the same time were promising to deliver EESUs to Zenn in sufficient numbers to build the Zenn City Car in three months.

Three months to go from demonstrating the purity of the dielectric material to mass production of the finished product??? They'd still have to demonstrate that the dielectric actually works in a capacitor; then demonstrate its safety*; then develop mass-production methods; then build the manufacturing facility; and then turn out enough EESUs to meet Zenn's requirement.

It was around this time that a friend told me not to even consider lithium batteries since lithium would be obsolete in three months when EEStor's EESUs became available. This was, IIRC, around 3 years ago.

* Safety is not a trivial issue: If the dielectric in a capacitor is breached there is an explosive release of energy. While I have confidence that this issue can be solved, it is not trivial and will require considerable research and testing. Three months is not going to do it.

It was this promised time line that convinced me that the whole thing was a scam. To a lesser extent, the promise that EESUs would be significantly less expensive than batteries of the same capacity, also put up a red flag for me.

I still hope that ultracapacitors will one day be developed. They would allow for faster charging. (As fast as the available electric service can deliver the energy.) And more efficient charging and discharging, among other things eliminating the bottleneck for regenerative braking and virtually eliminating the charging and discharging losses experienced by batteries.

I believe EEStor is a scam, and I believe that Zenn got scammed. I would dearly love to be wrong.

Timo | 13 giugno 2011

BTW, imitating first posters post "the A123 Lithium ion batteries would allow an electric car to charge in about 5 minutes, have a driving range of 250 miles and have a speed of about 180 miles an hour"

It just requires a really big battery and engine. Notice the "1" in front of 80. EESTOR, even if true, would be downgrade to batteries using those measurements.

What makes ultracaps so tempting is the durability and extremely high power density, more like 5 second charging, not 5 minutes. That would require something like superconductive cables for charging though. Charging 100kWh in 5 seconds would mean 120MW connection. One small power plant entire power for five seconds.

Brian H | 14 giugno 2011

Yeah, I think somebody watched "Back to the Future" a few times too many and came up with the whole EE-whizz. The grifter's main tools and resources are people's greed and hope (wishful thinking).

you should nickname your friend, "Any Day Now". I wouldn't be able to resist. >:)

daniel1948 | 17 giugno 2011

Brian: My friend is a radical optimist. An all-around good guy with a commitment to electric transportation and a high level of technical competence. But he is insufficiently skeptical of radical claims. He is very good-natured and reluctant to call anyone a fraud. I trust him to work on my car, but not to give me investment advice.