cool!

searching I found this:
http://www.sciencedaily.com/releases...0905072008.htm

an old article from 2001... which provided the phrase "Solid Oxide Fuel Cell"

and of course Wikipedia:
http://en.wikipedia.org/wiki/Solid_oxide_fuel_cell

seems like the problem is the crazy amount of heat (800-1000 *F) required for operation... also it apparently needs an 8 hour warm up time...

but when combined with a gas turbine they can get upwards of 85% efficiency