Three-dimensional electrode structure and battery having the electrode structure
A three-dimensional (“3D”) electrode structure includes an electrode collector plate, a plurality of active material plates disposed on the electrode collector plate and protruding from the electrode collector plate, and partition walls arranged on the electrode collector plate and substantially perpendicular to the plurality of active material plates in a plan view so as to provide structural stability of the plurality of first active material plates where the 3D electrode structure may be one of two electrode structures that are spaced apart from each other with an electrolyte layer therebetween.
1. A three-dimensional electrode structure comprising:
an electrode collector plate;
a plurality of active material plates including active material, disposed on the electrode collector plate and protruding from the electrode collector plate; and
a partition wall disposed on the electrode collector plate and perpendicular to the plurality of active material plates in a plan view; and
an electrolyte layer disposed on the plurality of active material plates and covering a side surface of at least one of the plurality of active material plates which is perpendicular to an extension plane of the electrode collector plate,
wherein the plurality of active material plates has a planar shape,
wherein the partition wall is perpendicular to the electrode collector plate, and
wherein the electrolyte layer is interposed between the electrode collector plate and an upper surface of the partition wall facing the electrode collector plate such that the electrolyte layer includes:
a first surface facing the electrode collector plate; and
a second surface opposite to the first surface and facing the upper surface of the partition wall, and
wherein the first surface of the electrolyte layer and the second surface of the electrolyte layer are disposed on the upper surface of the partition wall.
2. The three-dimensional electrode structure of claim 1 , wherein a plurality of partition walls is arranged at equidistant intervals in a length direction of the plurality of active material plates.
3. The three-dimensional electrode structure of claim 2 , wherein the plurality of partition walls has a planar shape and is arranged in parallel with one another.
4. The three-dimensional electrode structure of claim 2 , wherein the plurality of active material plates is perpendicular to the electrode collector plate in a cross-sectional view, and
the plurality of partition walls is perpendicular to the electrode collector plate in the cross-sectional view and perpendicular to the plurality of active material plates in the plan view.
5. The three-dimensional electrode structure of claim 2 , wherein the plurality of partition walls has the same height as those of the plurality of active material plates with respect to a planar surface of the electrode collector plate.
6. The three-dimensional electrode structure of claim 1 , wherein the partition wall and the plurality of active material plates comprise active materials of a same composition or different compositions.
7. The three-dimensional electrode structure of claim 1 , wherein the partition wall comprises a non-active material.
8. The three-dimensional electrode structure of claim 1 , further comprising a partition wall internal collector layer disposed inside the partition wall and electrically contacting the electrode collector plate, the partition wall internal collector layer comprising an electronic conductor.
9. The three-dimensional electrode structure of claim 8 , wherein the partition wall internal collector layer has a planar shape protruding and extending from a planar surface of the electrode collector plate.
10. The three-dimensional electrode structure of claim 8 , wherein the partition wall internal collector layer is inside the partition wall in parallel with the partition wall.
11. The three-dimensional electrode structure of claim 8 , wherein the partition wall internal collector layer is inserted into the partition wall, and two surfaces of the partition wall internal collector layer contact the partition wall.
12. The three-dimensional electrode structure of claim 8 , wherein a first end portion of the partition wall internal collector layer contacts the electrode collector plate, and a second end portion of the partition wall internal collector layer, which is opposite to the first end portion, contacts the electrolyte layer or is disposed inside the partition wall.
13. The three-dimensional electrode structure of claim 1 , wherein the plurality of active material plates is arranged at equidistant intervals on the electrode collector plate.
14. The three-dimensional electrode structure of claim 1 , further comprising an internal collector layer disposed inside the plurality of active material plates and electrically contacting the electrode collector plate, the internal collector layer comprising a conductor.
15. The three-dimensional electrode structure of claim 1 , wherein the electrode collector plate comprises a conductor.
16. The three-dimensional electrode structure of claim 1 , further comprising an active material base layer provided on a surface of the electrode collector plate, on which the plurality of active material plates are disposed.
17. A battery comprising:
a first electrode structure;
an electrolyte layer provided on the first electrode structure; and
a second electrode structure on the electrolyte layer such that the electrolyte layer is interposed between the first and second electrode structures;
wherein the first electrode structure comprises:
an electrode collector plate;
a plurality of first active material plates disposed on the electrode collector plate and protruding from the electrode collector plate; and
a plurality of partition walls disposed on the electrode collector plate and perpendicular to the plurality of active material plates in a plan view,
wherein the plurality of first active material plates has a planar shape,
wherein the partition wall is perpendicular to the electrode collector plate,
wherein the electrolyte layer is interposed between the electrode collector plate and an upper surface of the partition wall facing the electrode collector plate such that the electrolyte layer includes:
a first surface facing the electrode collector plate; and
a second surface opposite to the first surface and facing the upper surface of the partition wall, and
wherein the first surface of the electrolyte layer and the second surface of the electrolyte layer are disposed on the upper surface of the partition wall.
18. The battery of claim 17 , wherein the second electrode structure comprises a plurality of second active material plates which are alternately arranged with respect to the plurality of first active material plates of the first electrode structure,
wherein the plurality of second active material plates and the plurality of first active material plates of the first electrode structure are respectively spaced apart from each other.
19. The battery of claim 17 , wherein the first electrode structure comprises a cathode electrode, and the second electrode structure comprises an anode electrode.
20. The battery of claim 17 , wherein the first electrode structure, the electrolyte layer, and the second electrode structure define a first battery cell layer,
wherein a plurality of first battery cell layers is stacked in the battery.