Current collector structures for rechargeable battery
View Patent ↗Energy storage devices, battery cells, and batteries of the present technology include a current collector including a polymer film coupled with a plurality of wires of a metal-containing material. The current collector may include a first region and a second region. The first region may be characterized by an extension of the metal-containing material. The polymer film may be contained within the second region of the current collector. Additionally, the plurality of wires may extend from the extension of the metal-containing material along the polymer film.
1. A battery cell electrode comprising:
a current collector including a polymer film coupled with a plurality of wires of a conductive material, wherein:
the current collector comprises a first region and a second region;
the first region is characterized by an extension of the conductive material;
the polymer film is contained within the second region of the current collector;
the plurality of wires comprise a first plurality of wires extending across a first surface of the polymer film and a second plurality of wires extending across a second surface of the polymer film opposite the first surface of the polymer film; and
the first plurality of wires and the second plurality of wires extend from the extension of the conductive material along the polymer film.
2. The battery cell electrode of claim 1 , wherein the polymer film is at least partially contained between the first plurality of wires and the second plurality of wires.
3. The battery cell electrode of claim 1 , wherein the polymer film at least partially extends about the plurality of wires.
4. The battery cell electrode of claim 1 , wherein the polymer film comprises a conductive polymer film.
5. The battery cell electrode of claim 1 , further comprising an electrode active material positioned along the plurality of wires within the second region of the current collector.
6. The battery cell electrode of claim 5 , wherein the electrode active material at least partially extends within the plurality of wires to contact the polymer film.
7. The battery cell electrode of claim 5 , wherein an inter-wire distance is less than or equal to a thickness of the active material.
8. The battery cell electrode of claim 1 , wherein each wire of the plurality of wires is characterized by a nonlinear profile from the extension of the conductive material along the polymer film.
9. A battery comprising:
a first current collector including a polymer film coupled with a plurality of wires of a metal-containing material, wherein:
the current collector comprises a first region and a second region;
the first region is characterized by an extension of the metal-containing material;
the polymer film is contained within the second region of the current collector;
the plurality of wires comprise a first plurality of wires extending across a first surface of the polymer film and a second plurality of wires extending across a second surface of the polymer film opposite the first surface of the polymer film; and
the first plurality of wires and the second plurality of wires extend from the extension of the metal-containing material along the polymer film;
a first active material coupled with the first current collector;
a second current collector; and
a second active material coupled with the second current collector.
10. The battery of claim 9 , wherein the second current collector comprises a metal foil.
11. The battery of claim 9 , wherein the first current collector and the second current collector comprise components of a first battery cell within the battery, and wherein the battery further comprises a second battery cell including:
a third current collector proximate the first current collector.
12. The battery cell electrode of claim 9 , wherein the polymer film is at least partially contained between the first plurality of wires and the second plurality of wires.
13. The battery cell electrode of claim 9 , wherein the polymer film at least partially extends about the plurality of wires.
14. The battery cell electrode of claim 9 , wherein the polymer film comprises a conductive polymer film.
15. The battery cell electrode of claim 9 , further comprising an electrode active material positioned along the plurality of wires within the second region of the current collector.
16. The battery cell electrode of claim 15 , wherein the electrode active material at least partially extends within the plurality of wires to contact the polymer film.
17. The battery cell electrode of claim 15 , wherein an inter-wire distance is less than or equal to a thickness of the active material.
18. The battery cell electrode of claim 9 , wherein each wire of the plurality of wires is characterized by a nonlinear profile from the extension of the conductive material along the polymer film.