Power storage and distribution is the limiting factor in so many things that it's not even funny. Best of luck to all the researchers working on finding better ways to deliver power where we need it.

I had no idea ultracapacitors were only up to 5% of LION capacity. I thought they were already competitive.

I heard superconductors can be used for energy storage. Assuming we had a room temperature superconductor, what would the power/density on that be? I.e., how would it compare to LION?

Isn't this the 4th or 5th super-capacitor story in the last six months?

I'd like to know if that reflect fast advancing technology or just good publicity.

Well, we will need a new bubble once this one is deflated. The search for candidates is on. Front-runners are: Alterntaive Energy, Clean Tech, Bio Tech.

Both, but primarily the latter.