Comment by _hypx | Hacker News Reader

Comment by _hypx | Hacker News Reader

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Wrong. It's completely infeasible. Coupling with desalination plants will require you desal the equivalent of small seas every year for you to generate enough lithium. It is simply not happening. Hydrogen actually is inexhaustible without deluding yourself into fantasies.

> Certainly not. Fuel cells could certainly become practical for transportation, but HYDROGEN is not, with or without use in a fuel cell, and that's true for the several reasons I've already very clearly outlined.

That's completely gibberish, and you are utterly contradicting yourself. If you believe "batteries" are future because of efficiency, then you are also admitting that hydrogen fuel cells are just as efficient.

Honestly, given the obvious lie that you swallowed (lithium can be extracted from seawater), it's time reassess your "knowledge." You clearly do not understand the problem(s) at all.

> you are also admitting that hydrogen fuel cells are just as efficient.

You've pulled that delusion out of thin air. Fuel cells aren't batteries. Li-Ion gets ~90% conversion efficiency while fuel cells may get ~60%.

And with hydrogen that's only if you use it right after you've generated it. As soon as you need to compress and transport it, you're losing a lot more. Batteries charge from the grid, which itself has single-digit percentage losses. Hydrogen fuel cells can't do that, they have tremendous inefficiencies as the Department of Energy quote already stated.

Hydrogen fuel cells are far more expensive and vastly less efficient than batteries. There's absolutely no reason to continue to push the former when the latter is immensely practical and available today.

But you seem to ignore all information that doesn't bode well for your hydrogen dream, so I expect you'll find yet another reason to disregard this as well.

Farewell.

Nobody is saying batteries are no good... we're all saying they are a PART of the solution. AS. IS. HYDROGEN.

https://www.startupdaily.net/topic/climate-tech/elon-musk-be...

You are not suggesting li-ion. You brought up li-air, which is a fuel cell. You are suggesting fuel cells as the long-term answer, but specifically excluding hydrogen fuel cells.

This basically special pleading, and it is pure nonsense. You must accept hydrogen fuel cells as both viable and cost effective if you ever advocate for any type of metal-air battery.

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