Patent ID: 11870039
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An electrode assembly comprising:
a first electrode in the form of a single sheet that is repetitively in-folded and out-folded at a predetermined interval;
a plurality of second electrodes interposed in spaces formed by in-folding the first electrode; and
a separator in the form of a single sheet that is interposed between the first electrode and the plurality of second electrodes so as to be repetitively in-folded and out-folded at the predetermined interval together with the first electrode,
wherein the first electrode is a single-sided electrode in which a first electrode active material is applied to only a first surface of a first electrode collector, and a second surface of the first electrode collector opposite to the first surface does not have the first electrode active material thereon, the second surface of the first electrode collector having adjacent confronting portions that are in surface contact with one another, and
the plurality of second electrodes are each a double-sided electrode in which a second electrode active material is applied to first and second opposite surfaces of a second electrode collector, and each of the plurality of second electrodes is interposed only in a corresponding one of the spaces formed by in-folding the first electrode.