FIELD: electrical engineering.
SUBSTANCE: according to this invention, the secondary battery current collector (1) includes a layer (2) of electrically conductive resin and a layer (3) of ion barrier on the resin layer (2) surface. The ion barrier layer (3) contains ion capturing particles (6) wherein metal compounds (5) are in place on metal-containing particles surface (4). Ion-capturing surfaces (6) are envisaged continuously from the division boundary (7) between the resin layer (2) and the ion barrier layer (3) to the surface (3a) of the ion barrier layer (3). Thus, the ion barrier layer (3) prevents ingress of ions which may reduce ions absorption in the current collector (1).
EFFECT: increased battery capacitance.
17 cl, 9 dwg
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