Nickel cathodes are well appreciated in the non-ferrous metal market. Pure nickel is a malleable and very ductile metal of silver-white color, which in air, at ordinary temperatures, is coated with a thin oxide film that protects it from corrosion.
Nickel got its name from the evil spirit of the mountains from German mythology (cf. German: Nickel – a mischievous person), who threw a mineral to seekers of copper that looked only like copper ore. However, during the melting of nickel ores, arsenic gases were released, which is why the metal was named after its properties.
Nickel, as such, is widespread in the earth’s crust and is found only in bound form, however, in iron meteorites periodically falling to the earth’s surface, the concentration of native nickel can reach 8%.