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submitted 11 months ago by Hypx@lemmy.world to c/technology@lemmy.world

Amazon thinks hydrogen can be a more sustainable fuel for vehicles at its warehouses, but it’ll have to clean up hydrogen production first.

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[-] dragontamer@lemmy.world 21 points 11 months ago

Strange. I'm sure that H2 has benefits to larger vehicles like Trucks. But on small vehicles like forklifts, I thought that battery technology (even Lead-Acid batteries) were sufficient?

Did the H2 fuel cell shrink down in size recently to make forklift-sized vehicles usable for H2 fuel? This is a development that surprises me.

[-] Hypx@lemmy.world 19 points 11 months ago

There are fuel cell powered drones out there. Size hasn't been an issue for a long time.

[-] dragontamer@lemmy.world 13 points 11 months ago* (last edited 11 months ago)

Do you know what the technology is for the pressurized H2 at these sizes? Its been my understanding that larger vehicles scale better (ie: thicker walls and bigger containers) to better deal with the H2 volume issue.

Bigger vehicles can take advantage of exotic / expensive processes like liquified H2 or 700-bar pressures or whatnot. I don't think that's been miniaturized to drone or forklift sizes though.

[-] Hypx@lemmy.world 8 points 11 months ago* (last edited 11 months ago)

They're still using pressurized gas tanks. Apparently, not even a drone is not too small for such things.

[-] AFLYINTOASTER@lemmy.world 3 points 11 months ago

What an edifying thread, thank you both for knowing stuff about things

[-] cynar@lemmy.world 1 points 11 months ago

The drones generally don't use compressed hydrogen (at least the ones I've seen). It's too dangerous. Instead they use a pellet based storage system. You can liberate hydrogen from it, but it's rate limited. It will burn, but it can't launch like a flaming rocket.

The downside is the pellet systems aren't as simple as just refilling the tank.

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this post was submitted on 29 Dec 2023
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