Positive electrode for lithium ion battery and lithium ion battery using same
A lithium-ion battery and positive electrode technology, which is applied in the direction of battery electrodes, non-aqueous electrolyte battery electrodes, electrode collector coatings, etc., can solve the problems of not being able to fully improve safety characteristics and performance at the same time
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example 1
[0046] By mixing the active material LiNi 1 / 3 co 1 / 3 mn 1 / 3 94wt%: PVdF 3wt%: acetylene black 3wt%, which was coated on the Al current collector in a certain amount to prepare a positive electrode, and then rolled to a desired thickness at a temperature of 110°C. Then, urethane binder 8wt% and water 92wt% were stirred for 2 hours using a stirrer to prepare a binder solution for making a composite conductive material slurry for additional coating. Then, a conductive material, ie, acetylene black, was mixed into the binder solution at a weight ratio of 1:2, and sufficiently stirred using a bead mill mixer with a strong torque to make a composite conductive material slurry. Then, using a slot die coater, the composite conductive material slurry was coated on the previously prepared positive electrode active material layer of the positive electrode manufactured by rolling the positive electrode current collector and the positive electrode active material layer, followed by It w...
example 2
[0050] The procedure of Example 1 was repeated to manufacture a lithium ion battery, except that a positive electrode formed with a composite conductive layer of 18 μm thick was manufactured by coating the composite conductive material slurry of Example 1 using a slot die coater followed by drying it.
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