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US 2022/0102761 A1Published application
Bipolar lithium secondary battery
AssigneeLG Energy Solution, Ltd.
InventorsSuenghoon HAN, Jaegil LEE
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Abstract
A bipolar lithium secondary battery having a bipolar unit that includes a current collector with positive and negative electrodes formed on opposite sides thereof. The bipolar lithium secondary battery may prevent self-discharging and the generation of bypass currents by separating the electrolyte solutions adjacent to the electrodes having different polarities by a polymer film attached to the edge of the current collector, and by preventing the movement of the separated electrolyte solutions.
Claims13
A bipolar lithium secondary battery comprising,
- a current collector having a first surface, a second surface opposite the first surface, and an edge defining a perimeter of the current collector;
- a polymer film extending outward from the edge of the current collector;
- a first positive electrode on the first surface of the current collector;
- a first negative electrode on the second surface of the current collector;
- first and second separators respectively formed on the positive electrode and the negative electrode;
- a first electrolyte solution contained between the first separator and the polymer film and the first surface of the current collector;
- and
- a second electrolyte solution contained between the second separator and the polymer film and the second surface of the current collector such that the second electrolyte solution is separated from the first electrolyte solution.
5 more elements
Dependencies are inferred from the claim text.