FIELD: electrical engineering.
SUBSTANCE: invention relates to electrode materials, particularly, to composite electrode materials to be used in a lithium-ion battery system. According to the invention, the composite electrode material includes at least one active material which is coated with an artificial passive film in order to effectively block the contact of the electrolyte and the active material, avoiding unnecessary absorption of lithium ions. Besides, outside the artificial passive film there is a middle layer and an external layer. Both the middle layer and the outer layer consist of a gel-like / liquid electrolyte and a solid electrolyte, but in different concentrations.
EFFECT: improved ion conductivity with reduced resistance to charge transfer and smaller amount of organic solvent.
14 cl, 5 dwg
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