Hydrogen tops out at 142 MJ / kg. Disappointing that so few here are aware of this basic fact. It seems obvious that if you want the density of liquid fuels, h

Hydrogen tops out at 142 MJ / kg. Disappointing that so few here are aware of this basic fact. It seems obvious that if you want the density of liquid fuels, hydrogen is the answer. Compromising yourself with a lower energy density substance stands as a very difficult problem to solve.