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Technology: Hydrogen back in the eco-car race

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    Or a miniature vicar
    •  
      CommentAuthorTrim
    • CommentTimeNov 12th 2019
     
    •  
      CommentAuthorAngus
    • CommentTimeNov 12th 2019
     
    That looks like a good one.
    •  
      CommentAuthorgoatcheez
    • CommentTimeNov 14th 2019
     
    Storing energy in hydrogen 20 times more effective using platinum-nickel catalyst



    Catalysts accelerate chemical reactions, but the widely used metal platinum is scarce and expensive. Researchers at Eindhoven University of Technology (TU/e), together with Chinese, Singaporean and Japanese researchers, have now developed an alternative with a 20 times higher activity: a catalyst with hollow nanocages of an alloy of nickel and platinum. TU/e researcher Emiel Hensen wants to use this new catalyst to develop a refrigerator-size electrolyzer of about 10 megawatts in the future. The results will be published on November 15th in the journal Science.
    https://phys.org/news/2019-11-energy-hydrogen-effective-platinum-nickel-catalyst.html
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      CommentAuthorAngus
    • CommentTimeNov 15th 2019
     
    Posted By: goatcheezdevelop a refrigerator-size electrolyzer of about 10 megawatts


    Connectors!!
    • CommentAuthorAsterix
    • CommentTimeNov 15th 2019
     
    Posted By: Angus
    Posted By: goatcheezdevelop a refrigerator-size electrolyzer of about 10 megawatts


    Connectors!!


    10 MW = 100A at 100KV, so not enormous...
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      CommentAuthorAngus
    • CommentTimeNov 15th 2019
     
    OK OK. It was on the way to an Angus.
    But not so small either.
  8.  
    Anything carrying substantial current at 100kV is going to be pretty large.
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      CommentAuthorTrim
    • CommentTimeNov 15th 2019
     
    Does it come on wheels?
    • CommentAuthorAsterix
    • CommentTimeNov 15th 2019
     
    Posted By: alsetalokinAnything carrying substantial current at 100kV is going to be pretty large.


    Yabut, insulation is lighter than copper.
  11.  
    The only thing that can truly insulate that kind of voltage is distance, that is, empty space itself. Which is indeed a lot lighter than copper, but requires a lot of... well... space to be effective.
    Once you get a little dust or moisture on any surface in between 100kV of potential, you will get leakage current, which will rapidly develop into a catastrophe if the source is actually capable of delivering 100 amps at 100 kV.
    • CommentAuthorAsterix
    • CommentTimeNov 15th 2019
     
    Good point. What's the outlook for inductive coupling?
  13.  
    At 10 MW? Not something I'd want in my garage, I don't think.
    • CommentAuthorAsterix
    • CommentTimeNov 15th 2019
     
    Is anyone talking about installing in residences?
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      CommentAuthoralsetalokin
    • CommentTimeNov 15th 2019 edited
     
    I sure hope not. But what are you gonna do with a 10 MW source the size of a refrigerator? It's like some monster that lives deep inside a cave, all bundled up with potential, and if you get too close it will barbecue your spleen.
    • CommentAuthorAsterix
    • CommentTimeNov 15th 2019 edited
     
    Methinks the technology has been exaggerated a bit...
    •  
      CommentAuthorTrim
    • CommentTimeNov 25th 2019
     
    Bill Gates Heliogen Has Breakthroughs for Concentrated Solar-Hydrogen to Replace Fossil Fuels Across Big Industries.

    https://www.nextbigfuture.com/2019/11/bill-gates-heliogen-has-breakthroughs-for-concentrated-solar-hydrogen-to-replace-fossil-fuels-across-big-industries.html#more-161275
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      CommentAuthorTrim
    • CommentTimeDec 5th 2019 edited
     
    Easy hydrogen from methanol.

    https://revolution-green.com/hydrogen-methanol-using-sunlight-mos2-ambient-temperature-pressure/

    Formaldehyde and producing methanol?
    •  
      CommentAuthorTrim
    • CommentTimeJan 29th 2020
     
    • CommentAuthorAsterix
    • CommentTimeJan 29th 2020
     
    Another example of unsustainable inefficiency. It takes a lot of electricity to produce metallic alumium-- far more than you get by hyrolizing the metal.

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