This seems like magic: Aluminum-air battery

I hope my sons can figure stuff like this out:

Phinergy batteries use a porous  electrode with a large surface area that captures the oxygen from ambient air. The electrode also contains a silver-based catalyst that doesn’t let CO2 interact with it. This unique and proprietary catalyst solves a common problem in air-battery technology, carbonization caused by CO2 permeating the electrode.

via Aluminum-air battery demonstrates extended range for EVs..