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The physical and chemical properties cobalt-phosphide

Physical properties

It is needle-like and gray. Its density relative (15degC), 6.14. Melting point is 1386degC. It is a cheap, stable, and efficient transition metal phosphide.


Cobalt-phosphide (CO2P) is soluble both in nitric acids and aqua regia, but not in water. CO2P is a compound that forms when the phosphorus source enters the cobalt lattice. Cobalt-phosphide is suitable for magnetism and lithium battery anodes, hydrogenation catalysts, photocatalytic degradation etc. Cobalt phosphide has a low bandgap with high thermal stability and chemical stability. It also has a strong electrical conductivity. This material is ideal for preparing high efficiency water-splitting catalysts.

Purity and particle sizes parameters of cobalt-phosphide



Particle size

-60 mesh

Bulk density:

6.14 (g/cm3)

How is Cobalt Phosphide Powder produced?

Oil bath

The phosphorus in tri octyl is used to synthesize phosphate. This phosphate can then be obtained from an organic mixture through the thermal decomposition metal phosphate. It is very easy to aggregate the cobalt nanowires when tri octyl is used in the reaction.

Hydrogen reduction

This is because the bond between phosphorus, oxygen, and metal is stronger. It is only at high temperatures that the bond can be broken. The high sintering temperatures cause the formation of large grains when phosphate is used to synthesize phosphate.


The toxic PH3 will be generated by the simple and relatively mild hypophosphite route, which is heating sodium hypophosphite at high temperatures.

Element preparation method

Metal phosphides can be prepared under hydrothermal conditions (140 to 200degC). As phosphorus sources, white phosphorus (also known as yellow phosphorus or red phosphorus) is used.

Cobalt phosphide price

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