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submitted 3 weeks ago by [email protected] to c/[email protected]

This past week, I attended the Micromobility Europe event in Amsterdam, where I saw many familiar company faces and several...

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[-] [email protected] 12 points 3 weeks ago

Hydrogen is the future of nothing but energy scams.

[-] [email protected] 8 points 3 weeks ago

It has the big advantage of easy long term energy storage. You can store power made by PV in summer and use it in winter.

[-] [email protected] 6 points 3 weeks ago

The water is cheap but the hydrogen requires special pressurized containers which in turn makes it lose its advantage over normal batteries.

[-] [email protected] 5 points 3 weeks ago

Yeah, it blew my mind that the Toyota Mirai's hydrogen tanks are pressurized to 10,000 psi. To store a decent amount of hydrogen you need compress it to crazy high pressure or cool it with liquid helium or some other exotic extreme cooling. The thing about hydrogen that always confused me is that hydrogen is very energy dense but it physically not very dense.

[-] [email protected] 2 points 3 weeks ago

It's not really energy dense. It's the single lightest atom in the universe, meaning it stores the lowest amount of energy. But it's very reactive chemically.

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this post was submitted on 08 Jun 2024
40 points (80.3% liked)

micromobility - Ebikes, scooters, longboards: Whatever floats your goat, this is micromobility

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Ebikes, scooters, longboards: Whatever floats your goat, this is all things micromobility!

"Transportation using lightweight vehicles such as bicycles or scooters, especially electric ones that may be borrowed as part of a self-service rental program in which people rent vehicles for short-term use within a town or city.

micromobility is seen as a potential solution to moving people more efficiently around cities"

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