CN-113130861-B - Active material structure, method of manufacturing the same, electrode structure, and secondary battery

Abstract

The present disclosure relates to an active material structure, an electrode structure including the same, a secondary battery including the same, and a method of manufacturing the same. The active material structure includes a first active material line arranged in a first direction, a second active material line arranged in a second direction intersecting the first direction, and an intermediate active material line provided between the first active material line and the second active material line in a third direction intersecting the first direction and the second direction, the intermediate active material line being provided in an overlapping region of the first active material line and the second active material line, wherein an upper active material line and the second active material line are electrically connected through the intermediate active material line.

Inventors

• ZHENG XISHU
• Pu Huilie
• JIN JINGHUAN
• SUN JINGGUO
• LI JUNHENG
• REN CHENGZHEN
• XU JINSHUO

Assignees

• 三星电子株式会社

Dates

Publication Date

20260505

Application Date

20201028

Priority Date

20191230

Claims (20)

1. 1. An active material structure comprising: a first active material line arranged in a first direction; a second active material line arranged in a second direction intersecting the first direction; An intermediate active material line between the first active material line and the second active material line in a third direction intersecting the first direction and the second direction, the intermediate active material line being provided in an overlapping region of the first active material line and the second active material line, A first channel extending in the second direction between the first active material lines and between the intermediate active material lines, and A second channel extending in the first direction between the second active material lines and between the intermediate active material lines, Wherein the first active material line and the second active material line are electrically connected through the intermediate active material line, Wherein the sum of the depth of the first channel measured in the third direction and the depth of the second channel measured in the third direction is greater than the thickness of the active material structure measured in the third direction.
2. 2. The active material structure of claim 1, wherein a length of the intermediate active material line measured in the first direction is equal to a width of the intermediate active material line measured in the second direction.
3. 3. The active material structure of claim 1, wherein The intermediate active material strand includes: a first pair of intermediate active material lines adjacent to each other in the first direction, and A second intermediate active material line adjacent to each other in the second direction, and The distance between the first pair of intermediate active material lines in the first direction is equal to the distance between the second pair of intermediate active material lines in the second direction.
4. 4. The active material structure of claim 1, wherein the intermediate active material line extends in the third direction.
5. 5. The active material structure of claim 1, wherein The first active material line extends in the second direction, and The second active material line extends in the first direction.
6. 6. The active material structure of claim 1, wherein The second active material line has a length measured in the third direction, and The intermediate active material line has a width measured in the third direction, Wherein the width of the intermediate active material line is greater than the length of the second active material line.
7. 7. The active material structure of claim 6, wherein The first active material line has a thickness measured in the third direction, Wherein the width of the intermediate active material line is greater than the thickness of the first active material line.
8. 8. The active material structure of claim 7, wherein the length of the second active material line is equal to the thickness of the first active material line.
9. 9. The active material structure of claim 1, wherein The second active material line has a first sintered density, The intermediate active material wire has a second sintered density, and The first active material line has a third sintered density, Wherein the first sintered density, the second sintered density, and the third sintered density are equal.
10. 10. The active material structure of claim 1, wherein The second active material line has a first sintered density, The intermediate active material wire has a second sintered density, and The first active material line has a third sintered density, Wherein the second sintered density is greater than the first sintered density and the third sintered density.
11. 11. The active material structure of claim 10, wherein the first sintered density and the third sintered density are equal.
12. 12. The active material structure of claim 1, wherein The second active material line has a first sintered density, The intermediate active material wire has a second sintered density, and The first active material line has a third sintered density, Wherein the first sintered density is less than the second sintered density and the third sintered density.
13. 13. The active material structure of claim 12, wherein the second sintered density and the third sintered density are equal.
14. 14. The active material structure of claim 1, wherein The second active material strand comprises a first active material, The intermediate active material strand comprises a second active material, and The first active material strand includes a third active material, Wherein the first active material, the second active material, and the third active material are the same.
15. 15. The active material structure of claim 1, wherein The second active material strand comprises a first active material, The intermediate active material strand comprises a second active material, and The first active material strand includes a third active material, Wherein at least two of the first active material, the second active material, and the third active material are different.
16. 16. The active material structure of claim 1, wherein The side surface of the intermediate active material line includes at least one of a (101) plane and a { hk0} plane, Wherein h and k each represent an integer greater than or equal to 1 and are the same.
17. 17. The active material structure of claim 16, wherein a side surface of the second active material line comprises at least one of a (101) plane and a { hk0} plane.
18. 18. The active material structure of claim 17, wherein a side surface of the first active material line comprises at least one of a (101) plane and a { hk0} plane.
19. 19. The active material structure of claim 18, wherein The first active material strand includes a first surface and a second surface opposite each other, The second active material line includes a third surface and a fourth surface opposite to each other, The third surface is between the second surface and the fourth surface, The second surface is between the first surface and the third surface, and The first surface, the second surface, the third surface and the fourth surface comprise (003) faces, Wherein when analyzed by X-ray diffraction using CuK alpha rays, the intensities of the peak corresponding to the (003) plane, the peak corresponding to the (101) plane and the peak corresponding to the { hk0} plane satisfy the following relationship (B+C)/A≥2.7, Where A represents the intensity of the peak corresponding to the (003) plane, B represents the intensity of the peak corresponding to the (101) plane, and C represents the intensity of the peak corresponding to the { hk0} plane.
20. 20. An active material structure comprising: a first active material layer on the second active material layer; An intermediate active material layer between the second active material layer and the first active material layer; A first channel extending in a second direction in the first active material layer and the intermediate active material layer, and A second channel extending in a first direction intersecting the second direction in the second active material layer and the intermediate active material layer, Wherein the first channel and the second channel intersect each other in the intermediate active material layer, Wherein a sum of a depth of the first channel measured in a third direction intersecting the first direction and the second direction and a depth of the second channel measured in the third direction is greater than a thickness of the active material structure measured in the third direction.

Description

Active material structure, method of manufacturing the same, electrode structure, and secondary battery Technical Field The present disclosure relates to an active material structure, an electrode structure, a secondary battery, and a method of manufacturing the active material structure. Background Secondary batteries are chargeable and dischargeable batteries, unlike primary batteries that are not chargeable. The lithium secondary battery may have a high voltage and a high energy density per unit weight, as compared to a nickel-cadmium battery or a nickel-hydrogen battery. Disclosure of Invention Active material structures having improved properties are provided. An electrode structure having improved performance is provided. Provided is a secondary battery having improved performance. Methods of making active material structures with improved properties are provided. However, the aspects are not limited thereto. Additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the presented embodiments of the disclosure. According to an embodiment, an active material structure includes a first active material line arranged in a first direction, a second active material line arranged in a second direction intersecting the first direction, and a third active material line between the first active material line and the second active material line in a third direction intersecting the first direction and the second direction, an intermediate active material line provided in an overlapping region of the first active material line and the second active material line, wherein the first active material line and the second active material line are electrically connected through the intermediate active material line. The length of the intermediate active material line measured in the first direction may be equal to the width of the intermediate active material line measured in the second direction. The intermediate active material lines may include first intermediate active material lines adjacent to each other in a first direction and second intermediate active material lines adjacent to each other in a second direction, and a distance between the first intermediate active material lines in the first direction may be equal to a distance between the second intermediate active material lines in the second direction. The intermediate active material line may extend in the third direction. The first active material line may extend in the second direction, and the second active material line may extend in the first direction. The second active material line may have a length measured in the third direction, and the intermediate active material line may have a width measured in the third direction, wherein the width of the intermediate active material line may be greater than the length of the second active material line. The first active material line may have a thickness measured in the third direction, wherein a width of the intermediate active material line may be greater than the thickness of the first active material line. The length of the second active material line may be equal to the thickness of the first active material line. The second active material line may have a first sintered density, the intermediate active material line may have a second sintered density, and the first active material line may have a third sintered density, wherein the first sintered density, the second sintered density, and the third sintered density may be equal. The second active material line may have a first sintered density, the intermediate active material line may have a second sintered density, and the first active material line may have a third sintered density, wherein the second sintered density may be greater than the first sintered density and the third sintered density. The first sintered density and the third sintered density may be equal. The second active material line may have a first sintered density, the intermediate active material line may have a second sintered density, and the first active material line may have a third sintered density, wherein the first sintered density may be less than the second sintered density and the third sintered density. The second sintered density and the third sintered density may be equal. The second active material line may include a first active material, the intermediate active material line may include a second active material, and the first active material line may include a third active material, wherein the first active material, the second active material, and the third active material may be the same. The second active material line may include a first active material, the intermediate active material line may include a second active material, and the first active material line may include a third active material, wherein at least two of the first active material, the second