Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile.
N 8145 (OTTOKEMI) Nickel granular, 6 x 6 mm, 99.995% Cas 7440-02-0 - used by certain manufacturers in Li-ion batteries. Ni(IV) remains a rare oxidation state of nickel and very few compounds are known to date.