Raw concrete price in USA is closer to 150$/m3, often less. One thing we don’t know is life expectancy vs Li-ion, whose 10-year charge is ~60%. I haven’t read

Raw concrete price in USA is closer to 150$/m3, often less. One thing we don’t know is life expectancy vs Li-ion, whose 10-year charge is ~60%. I haven’t read the paper; one thing that’ll also be interesting is operating temperatures. This could be a massive upside to concrete supercaps in certain parts of the globe.