Just... one of these will probably catch on, yes, and that's awesome, but we've come up with so many different ideas that at this point, demonstrating a high-capacity lithium battery prototype is the Aristocrats joke of battery science.
Lithium-sulfur is an older, more well-studied technique, and it only promises a 4x increase. There are still quite a few kinks to be worked out but I think it has the best potential of the bunch for the near future.
http://en.wikipedia.org/wiki/Lithium-ion_battery#Variations_...
http://en.wikipedia.org/wiki/Lithium-sulfur_battery
http://en.wikipedia.org/wiki/Nanowire_battery
Just... one of these will probably catch on, yes, and that's awesome, but we've come up with so many different ideas that at this point, demonstrating a high-capacity lithium battery prototype is the Aristocrats joke of battery science.