Thin film reserve battery

Patent metadata

Field	Value
Publication number	US-9985270-B2
Application number	US-201615197230-A
Country	US
Kind code	B2
Filing date	Jun 29, 2016
Priority date	Jun 29, 2016
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

A single-electrode battery subassembly includes a separator comprising an electrolyte. The separator has a first surface and an opposing second surface. A single electrode is disposed over the first surface of the separator. A removable, electrically inert substrate disposed on the second surface of the separator.

First claim

The invention claimed is:

1. A single-electrode thin film battery subassembly, comprising:
a separator comprising an electrolyte, the separator having a first surface and an opposing second surface;
a single electrode disposed over the first surface of the separator;
a removable, electrically inert substrate disposed on the second surface of the separator; and
a support disposed on the substrate adjacent the separator, wherein the support includes an electrically conductive via connected to a current collector for a second electrode.

2. The subassembly of claim 1 , wherein the single electrode comprises a cathode electrode.

3. The subassembly of claim 1 , wherein the subassembly is incapable of functioning as a battery due to omission of an anode of the battery.

4. The subassembly of claim 1 , wherein the removable substrate is a flexible, peelable substrate.

5. The subassembly of claim 1 , wherein the removable substrate comprises at least one of plastic and paper.

6. The subassembly of claim 1 , wherein the electrolyte comprises one or more of KOH, ZnCl 2 , and an ionic liquid.

7. The subassembly of claim 1 , wherein the electrolyte comprises a gel.

8. The subassembly of claim 1 , wherein the separator comprises an electrolyte supported by paper or a polymer mesh.

9. The subassembly of claim 1 , wherein the electrolyte includes ZnO 2 as an additive.

10. The subassembly of claim 1 , wherein the single electrode is a cathode comprising MnO 2 .

11. The subassembly of claim 1 , wherein the support is a polymer film.

12. The subassembly of claim 1 , further comprising a current collector disposed on the single electrode.

13. The subassembly of claim 1 , wherein the single electrode is an air cathode.

14. The subassembly of claim 13 , wherein the air cathode comprises a catalyst and a conductivity enhancer.

15. A method of making a battery comprising:
forming a battery subassembly comprising:
forming a separator comprising an electrolyte on a removable, non-electrically active substrate such that a first surface of the separator is adjacent the substrate;
forming a first electrode on a second surface of the separator, wherein at least one of forming the separator and forming the first electrode comprises printing at least one of the separator and the first electrode;
removing the substrate from the first surface of the separator; and
disposing the first surface of the separator on a second electrode.

16. The method of claim 15 , wherein the first electrode is a cathode of the battery and the second electrode is an anode of the battery.

17. The method of claim 15 , further comprising forming a support on the substrate adjacent to the separator.

18. The method of claim 17 , wherein forming the support comprises forming a via through the support that contacts the second electrode and electrically connects the second electrode with a current collector.

19. The method of claim 15 , wherein disposing the first surface of the separator on the second electrode comprises applying a metal to the first surface of the separator.

20. The method of claim 19 , further comprising surface treating the metal before applying the metal to the first surface of the separator.

21. A thin film battery comprising:
a separator comprising an electrolyte, the separator having a first surface and an opposing second surface;
a support adjacent to and mechanically attached to the separator;
a first electrode disposed over the first surface of the separator;
a second electrode disposed over the second surface of the separator and the support; and
a via through the support that makes electrical contact with the second electrode.

Assignees

• Palo Alto Res Ct Inc

Inventors

• Schwartz David E

Classifications

• H01M4/8814 Primary

  Temporary supports, e.g. decal · CPC title

• H01M4/50

  of manganese · CPC title

• H01M6/385

  by insertion of electrodes · CPC title

• H01M12/08

  composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type · CPC title

• H01M2/1673

  Electricity · mapped topic