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There is no naturally occurring source of Hydrogen. It can only be produced at industrial scale by cracking it from carbon fuel (usually CNG). If a viable pathw

There is no naturally occurring source of Hydrogen. It can only be produced at industrial scale by cracking it from carbon fuel (usually CNG). If a viable pathway was created to produce it via electrolysis with sustainable energy, you’d be 10x better off (in terms of overall efficiency and carbon footprint) by putting that energy in a battery. STOP TRYING TO MAKE HFCS HAPPEN. They’re a carbon scam!

DennisP 5y ago
We're not going to have battery-powered long-haul jetliners for the foreseeable future. Meanwhile: > The Plasma Kinetics founder said that his company’s solution weighs only one-third of batteries for the same amount of energy. I agree that we need scalable electrolysis, but there are people working on that too.
- summm 5y ago
  Doesn't matter if people are working on it: Efficieny of the H2 cycle is limited by physics, not engineering.
  - DennisP 5y ago
    Efficiency of a production electrolysis plant today is about 80%, which really doesn't seem that bad. https://www.carboncommentary.com/blog/2017/7/5/hydrogen-made-by-the-electrolysis-of-water-is-now-cost-competitive-and-gives-us-another-building-block-for-the-low-carbon-economy https://www.carboncommentary.com/blog/2017/7/5/hydrogen-made...
    - NoblePublius 5y ago
      Ok cool now compress and store and transport it after you spend $10 trillion on the infrastructure to do that at planet scale. Or, send electricity into batteries over wires which already exist. Like, come on. You have to choose which energy innovator to back and you go with Tesla or the people pushing hydrogen (Shell, Exxon)?
      - DennisP 5y ago
        I totally support electric cars but going back to my comment above, what's your solution for long-haul jets?
- coryrc 5y ago
  People are making synthetic field from atmospheric carbon. Compatible with all existing infrastructure yet carbon-neutral.
  - DennisP 5y ago
    A big advantage of that method is that the same tech works for sequestering lots of carbon. At the current state of the art though, I don't think it's a given that it'll be cheaper than green hydrogen.

DennisP 5y ago

We're not going to have battery-powered long-haul jetliners for the foreseeable future. Meanwhile: > The Plasma Kinetics founder said that his company’s solution weighs only one-third of batteries for the same amount of energy. I agree that we need scalable electrolysis, but there are people working on that too.

summm 5y ago
Doesn't matter if people are working on it: Efficieny of the H2 cycle is limited by physics, not engineering.
- DennisP 5y ago
  Efficiency of a production electrolysis plant today is about 80%, which really doesn't seem that bad. https://www.carboncommentary.com/blog/2017/7/5/hydrogen-made-by-the-electrolysis-of-water-is-now-cost-competitive-and-gives-us-another-building-block-for-the-low-carbon-economy https://www.carboncommentary.com/blog/2017/7/5/hydrogen-made...
  - NoblePublius 5y ago
    Ok cool now compress and store and transport it after you spend $10 trillion on the infrastructure to do that at planet scale. Or, send electricity into batteries over wires which already exist. Like, come on. You have to choose which energy innovator to back and you go with Tesla or the people pushing hydrogen (Shell, Exxon)?
    - DennisP 5y ago
      I totally support electric cars but going back to my comment above, what's your solution for long-haul jets?
coryrc 5y ago
People are making synthetic field from atmospheric carbon. Compatible with all existing infrastructure yet carbon-neutral.
- DennisP 5y ago
  A big advantage of that method is that the same tech works for sequestering lots of carbon. At the current state of the art though, I don't think it's a given that it'll be cheaper than green hydrogen.