Cobalt phosphate is an inorganic compound with the chemical formula Co(PO₄), which exists in several different hydrated forms. Cobalt phosphate usually appears as blue or green crystals with some magnetic properties. In nature, cobalt phosphate exists in the form of the mineral cobalt phospholite, which is an important cobalt resource.

1. Catalyst: Cobalt phosphate can be used as a catalyst to play a role in hydrogenation, oxidation, dehydrogenation, and other chemical reactions.

2. Battery materials: Cobalt phosphate is a component of electrode materials for lithium-ion batteries, especially lithium cobalt phosphate, as a cathode material for lithium-ion batteries, has attracted attention because of its high energy density and good cycling stability.

3. Pigments: Cobalt phosphate can be used as a pigment, especially in its hydrate form, which is commonly used in the ceramic and glass industries for coloring and decoration due to its vivid blue color.

4. Magnetic Materials: Cobalt phosphate is magnetic and can be used to make hard magnetic materials, which are used in various electronic devices such as hard disk drives, magnetic recording media, and magnetic sensors.

5. Medical field: Cobalt phosphate also has potential applications in the medical field, such as as as a carrier of radioisotopes, for targeted drug delivery in cancer treatment, and for medical imaging.

6. Electronic materials: Cobalt phosphate and its compounds can be used as electronic materials, such as in the manufacture of semiconductor devices, conductive materials, and other electronic applications.

7. Corrosion inhibitors: Cobalt phosphate can be used as a corrosion inhibitor to protect metal surfaces from corrosion.

8. Research models: In scientific research, cobalt phosphate can be used as a model compound to study the physicochemical properties of transition metal phosphates.