Hypx_

14 ms·

121.
by Hypx_ 5y ago
We need a way to move goods without emissions. If hydrogen can do it, then it is definitely a good idea.
122.
by Hypx_ 5y ago
Though in hindsight a 64-bit version of x86 would’ve killed them all anyways. Had Intel invested money into that instead, they’d still win easily.
123.
by Hypx_ 5y ago
You could use anything derived from hydrogen too. Ammonia, methanol, synfuels, etc.
124.
by Hypx_ 5y ago
Even going by volumetric energy density, hydrogen is still higher than li-ion batteries. You can make hydrogen tanks a structural member. They're made out of carbon fiber after all. Modern fuel cells have extremely high power density.
125.
by Hypx_ 5y ago
It’s possible. A company called LAVO has made something of that sort.
126.
by Hypx_ 5y ago
At some point people will finally realize that hydrogen fuel cells are a type of battery. It’s made from literally water and has the highest possible energy density of any chemical battery.
127.
by Hypx_ 5y ago
Current fuel cell tech with compressed hydrogen has an energy density of above 1,000 Wh/kg. It's already far beyond what li-ion can provide.
128.
by Hypx_ 5y ago
Hydrogen is simple a better element to build a battery around than lithium. That and more availability and less dependency on rare elements.
129.
by Hypx_ 5y ago
A hydrogen fuel cell is the highest energy density battery possible. It doesn't how more advanced li-ion or a variant of it gets, hydrogen fuel cells will still have a higher energy density. Furthermore, by the time you're talking
130.
by Hypx_ 5y ago
It's cheaper overall since you don't need to worry about a heavy battery. This is already the case for larger vehicles: https://cafcp.org/sites/default/files/07-24-2020-Foothill-ZE... This likely to
131.
by Hypx_ 5y ago
The problem is that hydrogen has radically improved in the last decade, but batteries have not overcome it’s fundamental weaknesses. For instance, we are now see hydrogen drop to below $2/kg even with entirely green hydrogen. Fuel cell
132.
by Hypx_ 5y ago
The simplest counter argument is that it’s just cheaper to go with hydrogen. People have created this narrative where “efficiency = cost” when in reality it’s more expensive to go that far in efficiency.
133.
by Hypx_ 5y ago
Which is why you use an extremely high discharge battery or super capacitor. There’s no real problem with the fuel cell itself. Something that will become even less of a problem when more powerful fuel cells appear.
134.
by Hypx_ 5y ago
A dedicated race car will absolutely blow away a road car. I don't think you're even aware of much slower the road car will be on a track.
135.
by Hypx_ 5y ago
Even though they'd easily run circles around a Model 3, this admission still proves my point. Almost as much gymnastics as you're using here. Maintenance and fuel costs will drop for FCEVs too. Right now, battery buses are more ex
136.
by Hypx_ 5y ago
Hydrogen supercars and race cars exist. It's matter of having a high enough discharge rate battery or a supercapacitor. It's a completely pointless argument to bring up. Hydrogen buses are already cheaper to operate than battery b
137.
by Hypx_ 5y ago
Nothing you said is true.
138.
by Hypx_ 5y ago
There's a world of difference between a 1.5 kWh battery and an 80 kWh battery.
139.
by Hypx_ 5y ago
These problems are also true for nearly every country except China and a few others. UK, Germany, etc., also import huge amounts of energy and they too will need a way of importing energy in the future. Furthermore, none of these countries
140.
by Hypx_ 5y ago
The entire concept of "worse is better" can be more accurately be described as "don't let the perfect be the enemy of the good." Simple, functional solutions are good ideas, and attempt to replace them with perfect
141.
by Hypx_ 5y ago
As I understand, the byproduct of a carbon-air cell is carbon dioxide. This doesn't mean such a cell can't make sense, but it has some fundamental downsides that are hard to mitigate. It will requirement a very specific form of ca
142.
by Hypx_ 5y ago
All metal-air batteries have similar thermodynamic properties. If you can make a iron-air battery with good efficiency, than you can make a hydrogen-air battery with good efficiency too. Since water is significantly more available than just
143.
by Hypx_ 5y ago
Hydrogen-air batteries already exist and work extremely well. I think we are approaching the end of people seriously trying to make a new novel type of metal-air battery. Stuff like these are probably the last of its kind. BTW, hydrogen-air
144.
by Hypx_ 5y ago
It's going to live up to the hype. It just didn't happen in that timeframe.
145.
by Hypx_ 5y ago
More info: https://www.youtube.com/watch?v=YJBzEYduKK8
146.
by Hypx_ 5y ago
It's the same idea of green hydrogen. Only hydrogen allows you to use pipelines instead of physically hauling everything. You also don't have to worry about the battery physically gaining weight as you fly.
147.
by Hypx_ 5y ago
Because aluminum-air batteries are not rechargeable, they're fundamentally inferior to hydrogen fuel cells (which work in nearly the same way!). At least with hydrogen you can refuel the airplanes with a liquid instead of having to use
148.
by Hypx_ 5y ago
Electric airplanes are increasingly just gadgetbahns of the sky. None of the are even remotely feasible, and reading the comments here it's clear that even if they did exist they'd be immediately disrupted by existing airplanes. I
149.
by Hypx_ 5y ago
Hydrogen is guaranteed to be the future of energy storage. What we're seeing now is the normal "reaction" from established business that fear being disrupted. It's so predictable that it's embarrassing to even see p
150.
by Hypx_ 5y ago
The next stage is hydrogen powered cars. All of the upsides of electric cars but none of the downsides.

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