As gasoline prices soar and fuel cell proponents have yet to solve some basic problems, Patrick Moseley sets out the case for a fresh look at zinc-air technology.
The dual anxieties over the stability of oil supplies on the one hand and the environmental impact of fossil fuel consumption on the other are raising the desirability of a totally clean, affordable energy storage system to an all-time high.
Fuel cells, which are being intensively pursued at present, can indeed provide energy by consuming hydrogen to produce a benign waste stream. But the only economically . . .