Scientists Design Solar Cell That Captures Nearly All Energy of Solar Spectrum

Re:Scientists Design Solar Cell That Captures Nearly All Ene... by gene-h on Wednesday July 12, 2017 @05:48PM (#14756993)

As far as planes go, an intriguing option is liquid hydrogen. Hydrogen has a large energy density by mass, which is why we use it in rockets. There have been proposals on how current airliners might be converted to run off of hydrogen in the near term[0] for short and medium distance travel. If we can get fuel cell electric propulsion to work at jetliner speeds there is even more potential, as fuel cells can be made more efficient than heat engines.

[0]http://www.fzt.haw-hamburg.de/pers/Scholz/dglr/hh/text_2004_...

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Re:Scientists Design Solar Cell That Captures Nearly All Ene... by vectorjohn on Wednesday July 12, 2017 @08:36PM (#14757901)

I think it would be much easier to use methane. Just as carbon neutral if you make it yourself, and doesn't have as many exotic engineering requirements.

I didn't know that about fuel cells though, interesting.

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