Carbonyl nickel powder is widely used in electronics and manufacturing due to its high purity and fine particle size. It serves as a key material in the production of multilayer ceramic capacitors (MLCCs), where it acts as an internal electrode. Its uniform spherical shape allows for consistent layering and reliable performance in miniaturized electronic components.

In metal injection molding, carbonyl nickel powder is used to fabricate small, complex-shaped parts for automotive, aerospace, and medical devices. It provides excellent flow characteristics and sintering behavior, resulting in strong, dense final products.

It is also employed in electroplating and chemical plating processes to enhance surface hardness, wear resistance, and corrosion protection of metal components. Its reactivity makes it suitable as a catalyst in certain organic synthesis and hydrogenation reactions.

Additionally, carbonyl nickel powder is used in specialty coatings and conductive inks, where high electrical conductivity and adhesion are required. It plays a role in powder metallurgy for producing nickel-based alloys and porous filters used in high-temperature and corrosive environments.