ELECTRODE STRUCTURE AND LITHIUM BATTERY INCLUDING THE SAME

摘要

Provided are an electrode structure and a lithium battery including the same. The electrode structure may include a positive electrode, a negative electrode, a first separator, and a second separator having a thickness that is different from a thickness of the first separator, wherein the positive electrode and the negative electrode respectively include active material layers having different loading levels. The lithium battery may have high rate characteristics and life characteristics by including the electrode structure.

主权项

1. An electrode structure for a lithium battery, the electrode structure comprising:
a positive electrode; a negative electrode; a first separator; and a second separator, wherein the positive electrode comprises a positive electrode current collector; a first positive active material layer disposed on a first surface of the positive electrode current collector; and a second positive active material layer disposed on a second surface of the positive electrode current collector, the negative electrode comprises a negative electrode current collector; a first negative active material layer disposed on a first surface of the negative electrode current collector; and a second negative active material layer disposed on a second surface of the negative electrode current collector, a loading level of the second positive active material layer is higher than a loading level of the first positive active material layer, a loading level of the first negative active material layer is higher than a loading level of the second negative active material, the first separator is disposed between the second positive active material layer and the first negative active material layer, the second separator is disposed on an outer surface of at least one selected from the first positive active material layer and the second negative active material layer, and thicknesses of the first separator and the second separator are different from each other.