Comment on New fuel cell could enable electric aviation
xthexder@l.sw0.com 3 days agoFrom what the article says, this fuel cell produces sodium oxide by reacting sodium with oxygen. There’s no hydrogen gas being produced in the fuel cell.
The emissions are sodium hydroxide, or sodium carbonate after it reacts with carbon in the air.
(Also now I’m not sure where I got 1200Wh/kg from. The article says both 1000 and 1500 Wh/kg)
humanspiral@lemmy.ca 3 days ago
Article says whole system is 1000wh/kg (including support machinery). There are 5 (including intermediate step) reactions of air and sodium. I’d guess they are using 100% humidity air. H2 is part of the reaction with humidity, and is a much more rapid and “exothermic” reaction than transformation to SaO.