FIELD: electric elements.
SUBSTANCE: invention relates to technology of lithium-ion batteries and can be used in their design and manufacture. Selection of separator consists in comparison of difference of relative change of volume fraction of electrolyte in separator (Ds) and relative change of volume fraction of electrolyte in electrode (De) with standard value of 0.2. Compliance with the condition |Ds-De|<0.2, according to which a separator is selected for a specific type of electrochemical system of a lithium-ion battery, which provides the maximum achievable specific capacity.
EFFECT: possibility of selecting a separator for a specific type of electrochemical system of a lithium-ion accumulator, which provides maximum achievable specific capacity.
1 cl, 3 tbl, 2 ex
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