_hypx

68 ms·

871.
by _hypx 4y ago
False. We will have to drastically increase mining to have enough BEVs for everyone. We will go with hydrogen cars instead simply because this is nuts and unsustainable.
872.
by _hypx 4y ago
Nearly all future mining proposals are lithium ore. We simply don’t have enough brine water to meet demand.
873.
by _hypx 4y ago
Wrong. It is still impossible due to the extremely low concentrations of lithium. Studies like these are just wishful thinking. Just because you can extract minute quantities of it doesn’t make it remotely economically viable.
874.
by _hypx 4y ago
Just to be clear, they’re assuming $50/kWh, cheap infrastructure costs for the recharging system, alongside heavy taxes for tradition ships, plus other assumptions, to get to your claims. It’s much more of a stretch than you’re letting
875.
by _hypx 4y ago
Nothing is being rapid charged. You need 24 hours at 300 MW to charge one of these things. Either you use even more than 300 MW, or you have batteries charged many days in advance. Both are nutty ideas.
876.
by _hypx 4y ago
That figure comes from speculation about future technology. Right now, it breaks down at around 1,500 km. And that is based on (from what I can tell) very generous estimates regarding the cost of implementing the idea. I think an honest per
877.
by _hypx 4y ago
Likely at some point, yes. It can be argued that we're already at that point, since most new mining proposals are open pit mines.
878.
by _hypx 4y ago
The article is suggesting 300 MW of power draw per ship for around 24 hours. There is no extra time to recharge separately from the ship. So even if you did that, it makes no difference to the power grid. You will need truly enormous grid u
879.
by _hypx 4y ago
You should try reading the study. It is clearly a non-economical idea. Physics has nothing to do with it. And BTW, there has been a zero emissions solution to this problem for thousands of years: sail-ships. The fact that we don’t use sail-
880.
by _hypx 4y ago
It’s nuts. You can’t take the study seriously. Charging a few of these ships will easily overwhelm the local grid.
881.
by _hypx 4y ago
Lithium isn’t easy to mine, and basically impossible to extract in meaningful quantities from seawater. The word itself derives from lithos , meaning rock, because it is usually found in certain rocks. This hints at the challenges it takes
882.
by _hypx 4y ago
Neither 20ppm nor 0.17ppm are mineable reserves. The fundamental problem is that we run out of viable lithium ore, a realistic prospect if we’re planning to power ships with them.
883.
by _hypx 4y ago
Hydrogen will be a fuel. Except for synfuels, nothing has the necessary energy density for a huge of use cases.
884.
M2 MacBook Pro Can Hit 108C at Full Throttle(extremetech.com)
30 points by _hypx 4y ago|9 comments
885.
by _hypx 4y ago
Bill Gates is seeing the light now.
886.
by _hypx 4y ago
Note that a full sized battery pack will also need piping, cooling, cables, etc. So it won't actually reach 255 Wh/kg.
887.
by _hypx 4y ago
That's more the fault of regulators not being serious about hydrogen infrastructure.
888.
by _hypx 4y ago
That's the claim, not proven. In reality, very little batteries are recycled and we recover very little of the materials. https://arstechnica.com/science/2022/04/lithium-costs-a-lot-...
889.
by _hypx 4y ago
Not really. Li-ion batteries are very poorly recyclable. Not to mention it is rarely done right now.
890.
by _hypx 4y ago
That’s subjective. The Mirai refuels much faster and no EV at the same price has its range.
891.
by _hypx 4y ago
A dated claim. They are the same price and not much more to run. In fact, at current gasoline/diesel prices, they are cheaper than conventional cars to run.
892.
by _hypx 4y ago
A hydrogen fuel cell is 100% recyclable. It is basically analogous to a catalytic converter.
893.
by _hypx 4y ago
https://www.airproducts.com/news-center/2022/04/0422-air-pro... A lot of facilities are coming online.
894.
by _hypx 4y ago
That spare solar power will be used for hydrogen production most of the time.
895.
by _hypx 4y ago
The next step is to use excess renewable energy to electrolyze water and make hydrogen. To get to the next step requires direct air capture of CO₂. We haven't solved that last problem yet. Also, it is not really necessary to go to that
896.
by _hypx 4y ago
NiZn almost certainly cheaper than LiFePO₄, at least once they get to scale. Problems like self-discharge or cycle-life likely vary depending on cell design. I'm sure you can design a cell that has less of these problems. It is also mu
897.
by _hypx 4y ago
The solution is to use hydrogen for those things. If that is not possible, something like carbon capture or e-Fuels. This is very nearly a solved problem, we just don't want to do it or haven't gotten to it yet.
898.
by _hypx 4y ago
These problems seem to be really solved now. They’ve already are in the field and none of those doomsday scenarios seem to be happening. NiZn batteries are actually recyclable, where as LiFePO₄ batteries are not.
899.
by _hypx 4y ago
It has been solved in modern cell designs. A lot of this is just outdated criticism. For stationary energy storage, you don't need li-ion batteries at all.
900.
by _hypx 4y ago
Nickel-Zinc is probably closer to reality. Sad that there’s so little talk about NiZn batteries.

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