Ni4O3

Ni₄O₃ is a nickel oxide ceramic compound that exists primarily in research and experimental contexts rather than established industrial production. This mixed-valence nickel oxide belongs to the broader family of transition metal oxides and is of interest in materials science for its potential electronic and catalytic properties. The material is investigated for applications in catalysis, energy storage systems, and advanced ceramics where nickel oxide phases play functional roles, though it remains less commercially established than common binary oxides like NiO.