Positive electrode plate for nonaqueous battery, electrode group for nonaqueous battery and method for producing same, and rectangular nonaqueous secondary battery and method for manufacturing same
A non-aqueous battery, positive plate technology, applied in the manufacture of secondary batteries, non-aqueous electrolyte battery electrodes, large-sized batteries/batteries, etc., can solve the problems of rounding, application of electrode plates, etc. Improve permeability and improve insulation effect
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[0108] LiNi 8 co 0.1 al 0.05 o 2 The lithium-nickel composite oxide indicated is used as the positive electrode active material. in NiSO 4 Sulfuric acid with a predetermined ratio of Co and Al was added to the aqueous solution to prepare a saturated aqueous solution. While stirring the saturated aqueous solution, an alkaline solution in which sodium hydroxide is dissolved is slowly dropped, and the ternary nickel hydroxide Ni is precipitated by neutralization. 0.8 co 0.15 al 0.05 (OH) 2 . The precipitate was filtered, washed with water, and dried at 80°C. The average particle diameter of the obtained nickel hydroxide was about 10 μm.
[0109] Then, lithium hydroxide hydrate was added so that the ratio of the sum of the atomic numbers of Ni, Co, and Al to the atomic number of Li was 1:1.03, and heat treatment was performed in an oxygen atmosphere at 800° C. for 10 hours to obtain the target product: LiNi 0.8 co 0.15 al 0.05 o 2 . It was confirmed by powder X-ray...
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