3 ms·

Propane fuel cells have been around for a while: https://www.wattfuelcell.com/portable-power/watt-imperium/ https://www.wattfuelcell.com/portable-power/watt-imp

• Const-me 3y ago
  Do you know how much WATT Imperium costs? No information on their web site. AFAIK both fuel cells like that, and the inverse carbon capture machines, are technically possible for decades now. The issue is high cost due to precious metals in the catalyst. Apparently, these guys have solved the issue with much cheaper stuff for the catalyst, molybdenum phosphide.