Three-dimensional batteries and methods of manufacturing the same
Various methods and apparatus relating to three-dimensional battery structures and methods of manufacturing them are disclosed and claimed. In certain embodiments, a three-dimensional battery comprises a battery enclosure, and a first structural layer within the battery enclosure, where the first structural layer has a first surface, and a first plurality of conductive protrusions extend from the first surface. A first plurality of electrodes is located within the battery enclosure, where the first plurality of electrodes includes a plurality of cathodes and a plurality of anodes, and wherein the first plurality of electrodes includes a second plurality of electrodes selected from the first plurality of electrodes, each of the second plurality of electrodes being in contact with the outer surface of one of said first plurality of conductive protrusions. Some embodiments relate to processes of manufacturing energy storage devices with or without the use of a backbone structure or layer.
1. A three-dimensional non-aqueous battery, comprising:
a battery enclosure;
a first structural layer within the battery enclosure, the first structural layer having a planar surface;
a first plurality of conductive protrusions directly connected to and extending at least about 50 microns in a first direction from the planar surface of the first structural layer and having an aspect ratio of approximately 2.5:1 to 500:1;
a first plurality of cathodes and a first plurality of anodes within the battery enclosure, each of the first plurality of cathodes and first plurality of anodes being directly connected to and in electrical contact with an outer surface of one of said first plurality of conductive protrusions, the first plurality of cathodes having a thickness of 5 to 200 microns; and
a porous separator material between the first plurality of cathodes and the first plurality of anodes, whereby the first plurality of cathodes are in ionic connection to the first plurality of anodes through the porous separator material.
2. The three-dimensional battery of claim 1 , further comprising:
a second structural layer within the battery enclosure, said second structural layer having a second surface;
a second plurality of conductive protrusions directly connected to and extending from said second surface of said second structural layer; and
a second plurality of electrodes within the battery enclosure, each of the second plurality of electrodes being directly connected to and in electrical contact with an outer surface of one of said second plurality of conductive protrusions.
3. The three-dimensional battery of claim 2 , the second plurality of electrodes consisting of a second plurality of anodes.
4. The three-dimensional battery of claim 2 , the second plurality of electrodes consisting of a second plurality of cathodes.
5. The three-dimensional battery of claim 1 , wherein said first plurality of conductive protrusions surround a base material protruding from said first surface of said first structural layer.
6. The three-dimensional battery of claim 5 , wherein said base material and said first structural layer comprise the same material.
7. The three-dimensional battery of claim 1 , wherein each of said first plurality of electrodes comprises a layer overlying the outer surface of one of said first plurality of conductive protrusions.
8. The three-dimensional battery of claim 1 , wherein said first plurality of conductive protrusions comprise fins protruding at least 50 microns from said first structural layer and having a thickness smaller than 20 microns.
9. The three-dimensional battery of claim 1 , wherein said first plurality of conductive protrusions comprise pillars protruding at least 50 microns from said first structural layer.
10. The three-dimensional battery of claim 6 , wherein each of said first plurality of electrodes comprises a layer overlying the outer surface of one of said first plurality of conductive protrusions.
11. The three-dimensional battery of claim 6 , wherein said first plurality of conductive protrusions comprise fins protruding at least 50 microns from said first structural layer and having a thickness smaller than 20 microns.
12. The three-dimensional battery of claim 6 , wherein said first plurality of conductive protrusions comprise pillars protruding at least 50 microns from said first structural layer.
13. The three-dimensional battery of claim 9 , each of said pillars being substantially cylindrical.
14. The three-dimensional battery of claim 12 , each of said pillars being substantially cylindrical.
15. The three-dimensional battery of claim 2 , wherein said second plurality of conductive protrusions is electrically insulated from said first plurality of conductive protrusions.
16. The three-dimensional battery of claim 1 , wherein each of the first plurality of conductive protrusions that is contacted by one of the first plurality of cathodes is discontinuous from each of the first plurality of conductive protrusions that is contacted by one of the first plurality of anodes.
17. A three-dimensional non-aqueous battery, comprising:
a backplane having a planar surface;
a first plurality of anodes directly connected to and extending from the backplane planar surface in a first direction;
a first plurality of cathodes having a thickness of 5 to 200 μm directly connected to and extending from the backplane planar surface in the first direction;
an anode current collector for the first anode and a cathode current collector for the first cathode; and
a porous separator material between the first cathode and the first anode to allow ionic connection between the first plurality of anodes and the first plurality of first cathodes,
wherein at least one of the anode and cathode current collectors is non-planar, and extends at least about 50 microns from the backplane planar surface, and has an aspect ratio of approximately 2.5:1 to 500:1.
18. The three-dimensional battery of claim 17 , comprising a plurality of anodes that protrude from the backplane, the plurality of anodes including the first anode, each member of the plurality of anodes being electrically separated from the first cathode.
19. The three-dimensional battery of claim 18 , comprising a plurality of cathodes that protrude from the backplane, the plurality of cathodes including the first cathode, each member of the plurality of anodes being electrically separated from each member of the plurality of cathodes.
20. The three-dimensional battery of claim 18 , wherein the plurality of anodes is associated with the at least one current collector to form a non-planar active battery component.
21. The three-dimensional battery of claim 19 , wherein the plurality of cathodes is associated with the at least one current collector to form a non-planar active battery component.
22. The three-dimensional battery of claim 20 , wherein a surface area of the non-planar active battery component is greater than twice a geometrical footprint of the backplane.
23. The three-dimensional battery of claim 21 , wherein a surface area of the non-planar active battery component is greater than twice a geometrical footprint of the backplane.
24. The three-dimensional battery of claim 17 wherein the first anode has a thickness of 5 to 200 μM.
25. The three-dimensional battery of claim 17 wherein the first anode has a thickness of 10 to 150 μM.
26. The three-dimensional battery of claim 17 wherein the first cathode has a thickness of 10 to 150 μM.
27. The three-dimensional battery of claim 17 wherein the first anode has a thickness of 10 to 150 μM and the first cathode has a thickness of 10 to 150 μM.
28. The three-dimensional battery of claim 27 wherein the first anode comprises tin, silicon, or aluminum, or is a titanate.
29. The three-dimensional battery of claim 27 wherein the first anode comprises carbon.
30. The three-dimensional battery of claim 1 wherein the anodes comprised by the first plurality of electrodes have a thickness of 5 to 200 μM.
31. The three-dimensional battery of claim 1 wherein the anodes comprised by the first plurality of electrodes have a thickness of 10 to 150 μM.
32. The three-dimensional battery of claim 1 wherein the cathodes comprised by the first plurality of electrodes have a thickness of 10 to 150 μM.
33. The three-dimensional battery of claim 1 wherein the anodes comprised by the first plurality of electrodes have a thickness of 10 to 150 μM and the cathodes comprised by the first plurality of electrodes have a thickness of 10 to 150 μM.
34. The three-dimensional battery of claim 33 wherein the first anode comprises tin, silicon, or aluminum, or is a titanate.
35. The three-dimensional battery of claim 33 wherein the first anode comprises carbon.
36. The three-dimensional battery of claim 33 wherein the first anode comprises tin, silicon, or aluminum, or is a titanate.
37. The three-dimensional battery of claim 33 wherein the first anode comprises carbon.