Electrode and secondary battery including electrode and method of manufacturing electrode
AssigneeSamsung SDI Co., Ltd.
InventorsEunhyeok SHIN, Taesu JEONG, Jungah YOON
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Abstract
An electrode may include a polymer layer including an insulating material, a metal layer formed on each of two surfaces of the polymer layer, an active material layer formed on a portion of the metal layer so that the metal layer may include a coated portion having the active material layer and a non-coated portion not having the active material layer, an electrode tab coupled to at least part of the non-coated portion, and an insulating layer formed on a portion of the electrode tab. A sum of a thicknesses of the electrode tab and a thickness of the insulating layer may be less than or equal to a thickness of the active material layer.
Claims20
An electrode comprising:
- a polymer layer including an insulating material;
- a metal layer formed on two sides of the polymer layer;
- an active material layer formed on a portion of the metal layer so that the metal layer includes a coated portion including the active material layer and a non-coated portion where the active material layer is not provided;
- an electrode tab coupled to at least part of the non-coated portion;
- and
- an insulating layer formed on a portion of the electrode tab,
- wherein a sum of a thicknesses of the electrode tab and a thickness of the insulating layer is less than or equal to a thickness of the active material layer.
A secondary battery comprising:
- an electrode assembly including a first electrode, a separator, and a second electrode;
- and
- a case housing the electrode assembly,
- wherein at least one of the first electrode and the second electrode includes:
- a polymer layer including an insulating material;
- a metal layer formed on two sides of the polymer layer;
- an active material layer formed on a portion of the metal layer so that the metal layer includes a coated portion including the active material layer and a non-coated portion where the active material layer is not provided;
- an electrode tab coupled to at least part of the non-coated portion;
- and
- an insulating layer formed on a portion of the electrode tab, and
- wherein a sum of a thicknesses of the electrode tab and a thickness of the insulating layer is less than or equal to a thickness of the active material layer.
A method of manufacturing an electrode, the method comprising:
- forming a metal layer on each of two surfaces of a polymer layer including an insulating material;
- forming an active material layer on a portion of the metal layer so that the metal layer includes a coated portion including the active material layer and a non-coated portion where the active material layer is not provided;
- coupling an electrode tab including a metal to the non-coated portion;
- after coupling the electrode tab to the non-coated portion, forming an insulating layer on a portion of the electrode tab, and
- wherein a sum of a thickness of the electrode tab and a thickness of the insulating layer is less than or equal to a thickness of the active material layer.
Dependencies are inferred from the claim text.