Posts Tagged ultracapacitor

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

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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