“…It is also widely applied in most technologies, since it is often found in its pure elemental forms (i.e., coal, graphite, and diamond) in large deposits and requires only minimal processing for subsequent applications. Specifically in electrochemical applications, carbon materials are of enormous industrial importance for already more than 100 years . Carbon electrodes are frequently utilized on an industrial scale for metallurgy; production of silicon, yellow phosphorus, and calcium carbide; or in batteries (the zinc–carbon battery is the most popular low-cost battery available).…”