Posts Tagged vehicle

Good news: Ultracaps are coming right along.

As of today, October 15th, 2015, commercially available ultracaps have obtained an energy density of 10.1 wh/kg. A standard lead-acid battery, such as the one you almost certainly use to start your car, offers an energy density of 40 wh/kg.

This means that within about four times the weight (and probably the volume) of said battery, you could use ultracaps (and the appropriate control electronics), you could completely — and permanently, as the ultracaps have multi-million charge/discharge cycle capability — replace your vehicle’s starter / power battery. This capability is considerably further along the development and commercial availability road for ultracaps; the last time I really paid close attention, ultracap energy density was down in the 2.5 wh/kg range, and so it would have taken sixteen times the weight (and volume!) of them to do the same job. That’s a lot tougher to justify.
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Most Interesting Company: EEstor

[EDIT: EEStor have been unable to produce the hoped-for results as of 2018. This article is still correct, but I wouldn't get your hopes up about EEStor at this point. To be fair, they're still around, and apparently still trying... but after all these years it seems very unlikely they will actually succeed.]

EEstor, of Cedar Park, Texas, is either headed for an ignominious (though well intentioned, I think) fall, or they’re in on the ground floor of the Next Big Thing. You see, EEstor is trying to produce a material that will in turn make relatively high voltage ultracapacitors practical.

That’s a mouthful, but it isn’t really that hard to understand; and when you understand it, the potential for change is mind-blowing.

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