Lithium cobalate is a Inorganic compound with the chemical formula LiCoO ₂, which is generally used as the positive electrode material of lithium ion batteries. Its appearance is a gray black powder, which can cause allergies when inhaled and in contact with the skin.

It is generally used as the cathode material of lithium ion secondary battery and the liquid phase synthesis process. It uses polyvinyl alcohol (PVA) or polyethylene glycol (PEG) aqueous solution as the solvent, and lithium salt and cobalt salt are respectively dissolved in PVA or PEG aqueous solution. The mixed solution is heated and concentrated to form gel. The generated gel is then heated and decomposed, and then calcined at high temperature. The calcined powder is milled and screened to obtain lithium cobalt oxide powder.

Lithium cobalt oxide is mainly used as a positive electrode material for lithium-ion batteries used in the manufacturing of mobile phones, laptops, and other portable electronic devices.

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