Israel’s Salvation Battery has incorporated carbon nanotubes into lead-acid batteries, quadrupling their life and making them potentially rechargeable and recyclable. Lead-acid cells currently are used to start gasolene-fueled vehicles, but soon may replace lithium-ion cells in EVs and more.
https://nocamels.com/2024/06/nanotubes-transform-lead-acid-batteries-into-super-energy-source/