WEF proposes new cement batteries for houses
(web.archive.org)
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And if they managed to get it as energy-dense as even current Li batteries, that would be even worse. Ever seen a battery fire, even just a laptop or a cell phone? Ever seen an EV catch fire? Imagine your entire fucking house doing that. I imagine it would be over for you and your family pretty quick, but what do you do with a house-sized battery fire in a residential neighborhood? You can't dunk it in a pool for 24 hours like Tesla suggests they do with burning electric cars.
Or we can go even further. Remember all those fun little explosions in Star Trek? People joke about it as being silly, but I'm pretty sure that part of the reasoning is that those ships have power being distributed via plasma conduits throughout the entire ship.
That's some highly volatile stuff when containment measures are breached. Not quite as bad as radioactive material from a Nuclear leak, but still pretty bad, especially if we're talking about using it in populated areas.
Wow. Exploding bridge consoles in our lifetime! The future is bright and shocking.
If they magically find something that has energy density of even half of gasoline or natural gas, that something will be so dangerous we will not want to keep it stored in our home.
There's a reason we don't store tanks of gasoline in our house.