boiling water again
China Built A Supercritical CO₂ Generator. That Doesn’t Mean It Will Last. - CleanTechnica

China has put a supercritical CO₂ power generator into operation. That does not mean it will deliver durable, low cost electricity over time.

CleanTechnica
Let’s separate CO2 from atmosphere and use it to run such generators. Win win. But don’t ask physics about this top much
I doubt the amount used in what I presume is a closed system like this will be significant on a atmosphere level, but it could certainly be the source.