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Third-Party Lab Certifies EESTOR Relative Permittivity of 22,500

23 April 2009

EEStor, Inc. issued a short press release announcing that a third-party has certified that EEStor’s patented and patent pending Composition Modified Barium-Titanate Powders have met and/or exceeded a relative permittivity of 22,500.

In the few public statements made by the company several years ago, it had said that it anticipated that the relative permittivity of its then current powder would either meet and/or exceed 18,500, the previous level achieved when EEStor produced prototype components using it engineering level processing equipment. (Earlier post.)

The third party certification tests were performed by Texas Research International’s Dr. Edward G. Golla, PhD., Laboratory Director.

EEStor said that it feels this is a “huge” milestone which opens the advancement of key products and services in the electrical energy storage markets of today. The automotive and renewable energy sectors are a few of the key markets that would benefit greatly with the technology.

EEStor, Inc. is working to develop solid-state electrical energy storage units (EESU’s) in the form of batteries and capacitors. The EEStor EESU—a high-power-density multi-layered barium titanate ceramic ultracapacitor—is expected to provide energy densities of more than 450 Wh/kg and more than 700 Wh/L; charge in minutes; and have extremely long life. (Earlier post.)

April 23, 2009 in Brief | Permalink | Comments (9) | TrackBack (0)

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Permittivity of Titanate Barryum is huge and that's is not new at all still it is of no use in capacitor because it collapses under high electric field, what matter is how fast it saturates, of course not a word on this...

At what voltage though!?

If it's at 3,500V then I'm interested (or even 1,000V, that would still support a useful energy density).

Conjugated polymers 6–100,000
(comparing apples and apples?)..http://en.wikipedia.org/wiki/Dielectric_constant

Is Zenn auto excited about their non-existent EEstor powertrain?

This is nuts. If this EESU has the potential to do what EEStor says it can, it is a matter of utmost national security that this product is developed as soon as humanly possible. It could save GM, Ford and Chrysler virtually overnight and make our country completely energy independent. It could do more for the American economy than the invention of the PC, the light bulb, and sliced bread put together. They shouldn't be working out of a little warehouse in TX, they should be working in a Manhatten-project style camp with the brightest geniuses in the country. I'm also tired of hearing Zenn mentioned as having an exclusive agreement to manufacture cars with this technology. Zenn's exclusive agreement is for cars under 1500 lbs. To put that in perspective the Civic is about 2500 lbs. The Tata Nano is the only car even close to 1500 lbs. Unless Zenn's plans are to corner the third world market on micro cars, their exclusive agreement is no big deal.

Isn't it more likely that the greatest concentration of money in the world--big oil--will pay whatever it takes to keep this invention hidden from the public until the oil market and the economy completely collapses?

I'm with you all the way until the end.
More likely than what?
More likely than this being worthwhile?

To correct the very incorrect statements made previously, according to Zenn Motors website, their battery rights include:

"All-electric 4-wheeled personal transportation uses for vehicles with a curb weight up to 1,400 kilograms, net of the battery weight, and
For golf carts and similar-styled utility vehicles, and
The aftermarket conversion of any internal combustion passenger vehicle to electric drive"

For those of you in the USA, 1 kilogram is 2.2 lbs. The 1500 lbs quoted was obviously very inaccurate.

Be it a Zenn weighing 1400 thr 3080 lb. - the EEstor 'breakthrough' has provided no product for year after postponed year.

Hoax Exposed
I have finally had enough of this BS on EESTOR and want to offer the following to all of you listeners out there. After designing e-circuits for decades one becomes very "up to speed" on various pitfalls involving electronic components, especially capacitors. Engineers are always quick to transition to seemingly impossible breakthroughs with "caps" that specify huge volume-vs-capacitance claims.
Case Point - Y5V Dielectric (AKA "Barium Titanate")
Exhibit 1 - Barium Titanate:
http://www.freepatentsonline.com/5604167.html
This dielectric is known for losing over 80% of its "labeled capacitance just by applying 50% of its rated voltage.
Please see data sheet example for for AVX Y5V.
Exhibit 2:
Simply search for avx "cY5V.pdf" and look at first page, top-middle graph, "Capacitance Change vs. DC Bias Voltage".
Yes - you see it right, if you apply 50% ot he parts rated voltage its capacitance drops DOWN by 85% to 15% of its capacitance rating.
It gets worst - look at what happens when you increase its temperature. Look at first graph "Temperature Coefficient".
It even gets worst again - Y5V (Barium Titanate) looses as much as 15% of its capacitance from aging for just 1,000 hours.
Exhibit 3:
Please look at the last page for Vishay Y5V capacitor data sheet, link: http://www.vishay.ru/docs/45156/elecdata.pdf
Trouble finding it, search: Vishay elecdata.pdf.
Chip manufacturers like Maxim and Linear Technology have been offering "Cautions" about Y5V (also known as Type-F dielectric by Panasonic and some others).
Exhibit 4:
Please find data sheet for LT1610 (just one of dozens of examples that caution usage of Y5V)
Linear Technology LT1610 link:
http://www.linear.com/pc/downloadDocument.do?name=1610f.pdf
The Bottom Line:
Power-house, top rated capacitor company scientists have been working to develop the "wonder cap" for numerous decades.....and all of the sudden out-of-the-blue EESTOR claims they have done what 10's of billions of $$ spent by Kemet, AVX, Vishay, Sprague, TDK, Panasonic and a dozen more companies could not do. I don't buy it - especially because of the lack of "transparency" by EESTOR on their technology.
Come on EESTOR - put up or shut up!

Gotto agree with the posts here. these guys have yet to demo any kind of prototype. Press releases + no product = vapour.

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