nano technology
If you're in the same boat as I am (ie, you have a job and/or a life) you probably never get a chance to read every last article linked to in the latest "Another Week of GW news" posting (or even 1 in 100!) So I just wanted to point to the set of stories about "spin batteries" or nanoball-batteries (scroll down a couple of pages from this page anchor), an example of which is here at New Scientist.
Cell phones recharging in 10 seconds and electric car batteries in 5 minutes, sounds promising!