aaa alkaline battery.An article analyzing the production process of lithium cobalt oxide

　　Lithium cobalt oxide, with the chemical formula LiCoO2, is an inorganic compound generally used as a positive electrode material for lithium-ion batteries. It appears as a gray-black powder and may cause allergies by inhalation and skin contact.

　　Generally used for lithium-ion secondary battery cathode materials, liquid phase synthesis process, which uses polyvinyl alcohol (pVA) or polyethylene glycol (pEG) aqueous solution as the solvent, and lithium salt and cobalt salt are dissolved in the pVA or pEG aqueous solution respectively. The mixed solution is heated and concentrated to form a gel. The resulting gel is heated and decomposed, and then calcined at high temperature. The calcined powder is ground and sieved to obtain lithium cobalt oxide powder.

　　Lithium cobalt oxide technical standards

　　1. Name: Lithium cobalt oxide Molecular formula: LiCoO2 Molecular weight: 97.88

　　2. Main use: lithium-ion battery

　　3. Appearance requirements: gray-black powder, no agglomeration

　　4. X-ray diffraction: compared with JCDS standard (16-427), no impurities exist

　　5. Packaging: Packed in plastic bags in iron drums

　　6. Chemical composition and physical and chemical performance indicators:

　　Nickel Ni0.05%max (wt%)

　　ManganeseMn0.01%max(wt%)

　　Iron Fe0.02%max (wt%)

　　CalciumCa0.03%max (wt%)

　　Sodium Na0.01%max (wt%)

　　Acidity and alkalinity pH9.5-11.5

　　Moisture content (loss on drying at 105ºC, %) Moisture (wt% loss at 105ºC) <0.05

　　Specific surface area (m2/g) BETsurfaceArea (m2/g) 0.2-0.6

　　Tap Density (g/cm3) TapDensity (g/cm3) 1.7-2.9

　　Particle size-D50 (μm) pSD-D50 (μm) 5-12

　　Particle size-D10 (μm) pSD-D10 (μm) 1-5

　　Particle size-D90 (μm) pSD-D90 (μm) 12-25

　　Lithium cobalt oxide safety information

　　Safety Instructions: S36: Wear suitable protective clothing.

　　Hazard Class Code: R42/43: Causes sensitization by inhalation and skin contact.

　　KC-3 type lithium cobalt oxide production process

　　1. KC-3 production flow chart

　　2. KC-3 production inspection process

　　Note: (1) Abnormalities during the process should be reported in time.

　　(2) Monitor the weight difference before and after the process, and report any significant abnormalities in a timely manner.

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