Superionic ice

Superionic ice is a surprising and alien condition of matter that displays a twin nature, functioning as both a solid and a liquid at the same time. Under conditions of high pressure and temperature, oxygen atoms are forced into a rigid, crystalline solid structure. Alternatively, hydrogen atoms lose their electrons, becoming positively charged ions that move freely through the structure, akin to a liquid. Because of the free movement of protons, this substance has the remarkable trait of excellent electrical conductivity.^[1]