submitted 8 months ago by multicolorKnight@lemmy.world to c/asklemmy@lemmy.world

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What sort of post or comment gets you downvoted the most? Especially if you don't think it's bad behavior in the first place, or don't care. Does not have to be on Lemmy, but we are here... One of the good things about Lemmy IMO is that it's small enough to see the posts that are unpopular. If you do "Top Day" on most channels, you cash reach the bottom, see what people here don't like.
As far as comments, attempting to rebut the person who is telling me my post sucks, is what gets me into negative numbers most often. The OP is going to voite it down, of course, and nobody else cares, usually.

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[-] PatMustard@feddit.uk 2 points 8 months ago

Are hydrogen vehicles a stupid idea?

[-] Nomecks@lemmy.ca 3 points 8 months ago

Here's my reasons:

Humans are shit at keeping pressurized gasses contained, and unburned hydrogen, while not a greenhouse gas, contributes huge to the formation of other greenhouse gasses
Storage options are high pressure (10k psi for Toyota right now) and hydrides. A 10k psi filling hose leak can be fatal. Hydride cells are generally full of metals that catch fire when they get wet, they're heavy and slow to fill.
Fuel cells use platinum group metals. Tweakers love stealing them from catalytic converters and fuel cells will be no different.
Electrolysis is super energy demanding. Until some silver bullet tech comes along, most vehicle hydrogen will likely come from fossil fuel extraction.

And while BEVs have heavy, hard to recycle batteries, they also have possibly the simplest drivetrain available. Everything is solid state, except for a few motor bearings, there's no fancy metals and there's very few components to the whole system.

[-] PatMustard@feddit.uk 1 points 8 months ago

Good points, this probably explains why I've not heard much about hydrogen fuel cell cars since modern electric cars picked up. Ultimately the hydrogen cars seem no worse than conventional ICEs, but given that EVs are developing pretty well now there's not that much need for the hydrogen ones anymore.

[-] Feathercrown@lemmy.world 2 points 8 months ago

Yeah now I want to hear about it

[-] Nomecks@lemmy.ca 2 points 8 months ago

I answered above your comment

[-] Feathercrown@lemmy.world 1 points 8 months ago

Thx, good points

this post was submitted on 20 Mar 2024

99 points (85.1% liked)

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