Dinickel boride is a chemical compound of nickel and boron with formula Ni2B.

The formula "Ni2B" and the name "nickel boride" are often used for a nickel-boron catalyst obtained by reacting nickel salts with sodium borohydride.

However, that product is not a well-defined compound, and its bulk formula is closer to Na2.5B(sic).

[3] Dinickel boride can be obtained (together with other nickel borides) by heating sodium borohydride with powdered nickel metal up to 670 °C in a closed vessel, so that the released hydrogen creates a pressure of up to 3.4 MPa.

[4] This inorganic compound–related article is a stub.