Ni3N

Nickel nitride, with the chemical formula Ni3N, is an inorganic compound. It is a dark gray solid that is insoluble in water. Nickel nitride can be synthesized through various methods, typically involving the reaction of nickel or nickel compounds with nitrogen at elevated temperatures. One common route involves heating nickel powder in an ammonia atmosphere. The crystal structure of Ni3N is related to the close-packed structures of metals. It exhibits a hexagonal crystal system.

Ni3N is known for its catalytic properties, particularly in the field of electrochemistry, where it has been investigated as a catalyst for the hydrogen evolution reaction and oxygen reduction reaction. Its potential applications are being explored in areas such as energy storage and conversion due to its electrochemical activity. Research into nickel nitride also focuses on its magnetic properties and its potential use in magnetic materials. The compound is relatively stable under ambient conditions but can decompose at very high temperatures.