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> Carbon dioxide is easier to compress and store at ambient temperature and atmospheric pressure compared to other gaseous storage vehicles, like hydrogen or air.

CO2 phase diagram: https://www.wolframalpha.com/input?i=co2+phase+diagram

Nitrogen phase diagram: https://www.wolframalpha.com/input/?i=nitrogen+phase+diagram

You can see that CO2 is way more reasonable to store liquid at ambient temps.

> Carbon dioxide is easier to compress and store at ambient temperature and atmospheric pressure compared to other gaseous storage vehicles, like hydrogen or air.

A utility-scale project under construction in Chile banks liquid nitrogen and heat.

Insulated low-pressure tankage is cheap.

It will be interesting which will turn out more practical.