Sponge bobbins

[gooner1]

https://www.bbc.co.uk/news/science-environment-523...

Thoughts on the above? I did search for a place to post this but was unable to find a suitable spot.
Please feel free to move it.

[aestetix1]

Hydrogen might be useful for some specialist commercial vehicles but it's basically deal for passenger cars and most goods transport. Battery electric has already made it obsolete and it will never have enough fuelling stations to be practical, while electricity is everywhere.

[anonymous-user]

And how much does this storage material cost?

Here's the rub, no matter what you are storing, it costs money. Be that a battery to store electrons (well Ions really) or a hydrogen "tank" to store molecules


As a practical HFC cell car still needs a battery, then you still need all the complex expensive 'lecy stuff, AND all the complex expensive H2 stuff as well! And without a cheap, clean source of hydrogen, or any existing fuel network in support, why would anyone use it in a passenger car??

[Mikehig]

Quite a lot of discussion of hydrogen cars, etc a few months ago:
https://www.pistonheads.com/gassing/topic.asp?h=0&...

[Gandahar]

Hydrogen boils down to can they convert it cheaply from wind power rather than a by product of big oil and also can they distribute it easily to filling points.

I'm not writing it off yet, I think it still has potential.

It's certainly better for the planet than EV batteries.

[Chris-S]

Solve 3 problems. Hydrogen production at scale in a clean fashion. Distribution of same, at scale again. Storage of same in vehicles in a manner more conducive to a cheap solution than the current one of keeping a tiny quantity at stupid pressure.

A decent supercapacitor solves the transient demand issue nicely.

Certainly not impossible, but not for a while I suspect.

[anonymous-user]

Gandahar said:

It's certainly better for the planet than EV batteries.

All HFC cars still require a battery! And a reasonable size one if you want to give the car decent peak performance and the ability to do a significant amount of regen. Without those, you may as well burn the hydrogen in an ICE.........

[craig_m67]

Are there any sciencey types who haven’t lost their will to consider statistics yet (covid overload) who have read the research paper?

I was wondering how much hydrogen this new material can store, from the abstract it look like 14% by weight. Which if I’m reading it correctly means 1kg of the stuff can store 140gm of hydrogen?

If a kilo of hydrogen equates to 100km (article), then you’d need just over 35kg of the stuff to travel 500km ... or have I lost the ability to do basic math (I’ve mixed up the units I think)

Edited by craig_m67 on Monday 20th April 00:23

[aestetix1]

craig_m67 said:

Are there any sciencey types who haven’t lost their will to consider statistics yet (covid overload) who have read the research paper?

I was wondering how much hydrogen this new material can store, from the abstract it look like 14% by weight. Which if I’m reading it correctly means 1kg of the stuff can store 140gm of hydrogen?

If a kilo of hydrogen equates to 100km (article), then you’d need just over 35kg of the stuff to travel 500km ... or have I lost the ability to do basic math (I’ve mixed up the units I think)

Edited by craig_m67 on Monday 20th April 00:23

That sounds about right to me.

[GT6k]

This is also very old new,s the use of hydrides to store hydrogen was the great hope as long ago as the 1970s and although there has been some progress its not exactly earth shttering. Charge times are long, there is a lot of waste heat in each direction and that's before you start worrying about degradation and all the rest. Its basically the same story as the regular battery breakthrough ones.

[Chromegrill]

Yes, but how big would a 35kg tank of hydrogen gas need to be?

[Throttle Body]

aestetix1 said:

Hydrogen might be useful for some specialist commercial vehicles but it's basically deal for passenger cars and most goods transport. Battery electric has already made it obsolete and it will never have enough fuelling stations to be practical, while electricity is everywhere.

I agree. And add to that the cost of a HFC at 10 times that of an IC engine (an electric transmission is only 3 times as expensive) and you immediately see why the future is electric for cars.

[craig_m67]

Chromegrill said:

Yes, but how big would a 35kg tank of hydrogen gas need to be?

That’s going to depend on the mass of the storage medium.
If it’s an aerogel or an unladen swallow then huge. If it’s like lead, then not so much.

I thought it was interesting, not sure as to why all the negativity. The important bit seems to be they’ve managed to get 14% storage (by weight) at ambient temps/pressure.. not 300-600degC as before (Merlin UNSW)