Super-high pressures used to create super battery: 'Most condensed form of energy storage outside of nuclear energy': "Using super-high pressures similar to those found deep in the Earth or on a giant planet, Washington State University researchers have created a compact, never-before-seen material capable of storing vast amounts of energy."
Two- and three-dimensional extended solids and metallization of compressed XeF2 : Nature Chemistry : Nature Publishing Group: "At ∼50�GPa, the transparent linear insulating XeF2 transforms into a reddish two-dimensional graphite-like hexagonal layered structure of semiconducting XeF4. Above 70�GPa, it further transforms into a black three-dimensional fluorite-like structure"
