Carbon is the fourth most abundant element in the universe by mass and the 15th most abundant element in the Earth’s crust. It’s abundance, and unusual ability to form polymers at temperatures easily encountered on Earth have ensured that it serves as a common element of all known life. Atoms of carbon can bond together in different ways, creating allotropes with varied physical properties. The best known of these are graphite, diamond, and amorphous carbon.
Graphite is the most stable form of carbon under standard conditions and has excellent electrical and thermal conductivity. When high purity crystalline Graphite flakes are processed through acid and thermal treatment, expanded graphite crystals are created, which in turn are pressed together into graphite foil, without the use of any resins or binders.