Steel has a density of 7.82 g/cm³ Water has a density of 1.00 g/cm³ Air has a density of 0.0013 g/cm³ These values show that the steel (solid) is the most dense while the air (gas) is the least ...

Lithium-oxygen, or lithium-air batteries (LABs), are one ... In contrast, for the LABs with an energy density over 300 W h kg −1, the cycle number was less than 20 cycles,” the researchers ...