In reply to Jones Beene's message of Fri, 11 Sep 2015 19:15:44 -0700: Hi, [snip] >To confuse matters, the supercapacitor (sometimes called ultracapacitor) is >electrochemical like the battery but with extreme capacitance at low voltage >(~1.2 v) dictated by chemistry. These bridge the gap between the old >electrolytic capacitors and one-time batteries. The SC store more energy and >tolerate many more discharge cycles but are larger in size per unit of energy. >The EEStor device has much higher voltage (up to 2000 v) and on paper looks >superior to any SC or the lithium ion battery by a factor of 2-3, but the >developers cannot demonstrate this in a working product.
Of course not. They put a high resistance material with low dielectric constant in series with a material with high dielectric constant, and expect that the high voltage will appear across the high dielectric substance, which of course it doesn't. It appears across the low dielectric constant material, leaving only a much lower voltage across the high dielectric constant material, and consequently much less energy stored than they anticipated. Common sense dictates that had the whole voltage (which exceeds the breakdown voltage of the high dielectric constant material) actually been across that material, then it would have shorted internally. Were that not the case, then there would have been no initial need for the series placement of the materials in the first place. Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
