Amorphous carbons are a type of carbon material that is non-crystalline, meaning it does not have a regular structure. They are usually formed by pyrolysis, the high-temperature decomposition of organic materials such as coal, wood, and oil. Amorphous carbons have a wide variety of uses, including being used as an electrode material in fuel cells and as a catalyst in chemical reactions. They can also be used to make carbon fibers, which are used in the aerospace, automotive, and sports industries.