it’s still a Li-ion (like most current rechargeables) but the electrolyte - the medium that transfers the ions from the anode to the cathode - (the + and -) inside the battery is made of a solid material instead of the current gen liquid ones. The benefits are less weight/size (as liquids take up more space than solids) and a more stable composition - the liquid electrolyte can’t leak - the way batteries get gunky and corroded if left for a while
Here’s some math on that “revolutionary” idea to put things into perspective, as it turns out, it’s pretty underwhelming:
And remember, this is assuming we use EVERY SINGLE BIT of aluminum we produce globally!
Obv hydrogen is “cleaner” than gas, but the point is the scale - this method is a drop in the ocean compared to current energy usage.
TL;DR: Using ALL the world’s annual aluminum production to make hydrogen would only give us 0.73% of the energy we get from natural gas…
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For the math nerds, here’s more detail on the chemistry and energy calc:
BTU Calculation:
Methane Comparison: