That doesn’t seem worth it when you can fit that amount of storage in about 20 L with lithium ion cells (think a small PC case), or something like 40 L if you used sodium ion cells, which are looking like a new alternative.
Concrete offgassing of CO2 is already a big contributor to greenhouse gasses, so I can’t imagine this battery version is improving things there. You’d probably have to wire your whole basement with electrodes to even access the stored energy.
That doesn’t seem worth it when you can fit that amount of storage in about 20 L with lithium ion cells (think a small PC case), or something like 40 L if you used sodium ion cells, which are looking like a new alternative.
Concrete offgassing of CO2 is already a big contributor to greenhouse gasses, so I can’t imagine this battery version is improving things there. You’d probably have to wire your whole basement with electrodes to even access the stored energy.