@Christmas_Man @teknomunk @not_br549 @1137 @IAMAL_PHARIUS @Paultron Indeed. I have more faith in the idea of exploiting reactions than I do raw storage. Aluminum nanoparticles are almost 100% reactive in field when exposed to water for reacting to generate H2O. Gallium and aluminum 3:1 mixture generates these passively in water and can be easily recovered. Gallium is wicked expensive for something that would be used as a medium, so this is not viable long-term but does show that we can setup alternatives to pure H2 storage provided water is available. Luckily water is a byproduct of fuel cell reactions, so one wouldn't need to carry much, in theory. sciencedaily.com/releases/2022/02/220218100644.htm