FIELD: various technological processes.
SUBSTANCE: invention relates to technologies for producing a positive electrode of lithium-ion accumulators (LIA) and can be used in LIA production. In the method of preparing the active mass of a positive electrode of LIA, dried lithium-cobalt dioxide, conductive carbon black Super R, graphite KS-6 are mixed with polyvinylidene fluoride in a vacuum mixer for 30 minutes at speed of 15 rpm with grinding at speed of 200 rpm, NMP is added to obtained mixture in proportion of 80–85% of its total amount, stirring in a vacuum mixer for 30 minutes at speed of 20 rpm with grinding at speed of 900 rpm, stirring is continued at speed of 65 rpm with grinding at 2,250 rpm in a vacuum mixer for 2 hours at a vacuum pressure of 0.08–0.1 MPa, then the remaining amount of NMP is added and mixed at speed of 65 rpm with grinding at 2,250 rpm in a vacuum mixer at a vacuum pressure of 0.08–0.1 MPa for 30 minutes, then the obtained mass is passed through a nickel mesh with mesh size of 0.100 mm.
EFFECT: shorter time for preparation of the active mass, which affects the efficiency of preparation.
1 cl
