Check out http://www.aviationtomorrow.com

Jim Dunn is leading an effort to develop a fuel-cell powered airplane.
I was involved in the project up until about a year ago. I don't what the
current status is.

"sanman" wrote in message
om...
Here are two sites I was reading:

www.metallicpower.com
www.electric-fuel.com

Both these companies are developing zinc-air fuel cells, which have 7
times the energy density of lead-acid batteries.

Could this technology be practical for powering an electric
airplane/helicopter/gyroplane?