FEEDBACK

摘要

Your innovation story fuel cells: A Lot of Hot Air?" (TR March 2001) gives me pause. Hydrogen under pressure is difficult to contain; leaks are difficult to detect, and you need to attain virtually zero leakage; it is explosive and highly flammable. Finally, if leaking hydrogen catches fire before it explodes, it burns with an invisible flame. I would not want to be in an accident involving a vehicle carrying or using hydrogen under high pressure, and I shudder to think of thousands of local "hydrogen" stations. Gasoline, in contrast, is a relatively safe "fuel.