Fig. 2: CO2 Density heatmap at various concentrations (Unit: kg m−3).

a100% CO2; b 95% CO2; c 90% CO2; d 80% CO2; e 70% CO2; f 60% CO2; g 50% CO2. Supercritical region and critical point of pure CO2 were plotted in each panel as reference.

a100% CO2; b 95% CO2; c 90% CO2; d 80% CO2; e 70% CO2; f 60% CO2; g 50% CO2. Supercritical region and critical point of pure CO2 were plotted in each panel as reference.