Integrated circuit with shared electrode energy storage devices

Patent metadata

Field	Value
Publication number	US-10050320-B2
Application number	US-201514593230-A
Country	US
Kind code	B2
Filing date	Jan 9, 2015
Priority date	Jan 9, 2015
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

An integrated circuit has a substrate, a super-capacitor supported by the substrate, and a battery supported by the substrate. The super-capacitor includes a super-capacitor electrode and a shared electrode, and the battery has a battery electrode and the prior noted shared electrode. The super-capacitor and battery form at least a part of a monolithic integrated circuit.

First claim

What is claimed is:

1. An integrated circuit
comprising: a substrate;
a super-capacitor supported by the substrate, the super-capacitor comprising a super-capacitor electrode and a shared electrode; and
a battery supported by the substrate, the battery comprising a battery electrode and the shared electrode, wherein the super-capacitor and the battery form at least part of a monolithic integrated circuit and wherein a portion of the super-capacitor electrode or the battery electrode is between at least two portions of the other of the battery electrode or the super-capacitor electrode.

2. The integrated circuit as defined by claim 1 wherein the battery and super-capacitor are electrically connected in parallel.

3. The integrated circuit as defined by claim 1 wherein the shared electrode is formed at least in part from a material so that it has surface energy storage capability and substantially no volumetric storage capability, the shared electrode comprising a shared anode for both the super-capacitor and the battery.

4. The integrated circuit as defined by claim 1 wherein the shared electrode comprises a material having both surface energy storage capability and volumetric energy storage capability, the super-capacitor forming an asymmetric super-capacitor, the shared electrode forming a shared cathode for the super-capacitor and the battery.

5. The integrated circuit as defined by claim 1 further comprising at least one of active circuitry and MEMS structure supported by the substrate and in electrical communication with the battery and the super-capacitor.

6. The integrated circuit as defined by claim 1 wherein the integrated circuit comprises a plurality of layers, at least one of the layers including two of the electrodes.

7. The integrated circuit as defined by claim 1 further comprising switching circuitry to switch between at least a) a first state using the battery only, and b) a second state using the super-capacitor only, and c) a third state connecting the super-capacitor and battery.

8. The integrated circuit as defined by claim 1 wherein the super-capacitor electrode comprises graphene and the battery electrode comprises graphite.

9. An integrated circuit comprising: electrolyte material;
a shared electrode connected to the electrolyte material;
a substrate having a monolithic integrated circuit formed thereon;
a super-capacitor electrode connected to the substrate and the electrolyte material with the electrolyte material between the super-capacitor electrode and the shared electrode; and
a battery electrode connected to the substrate and the electrolyte material and substantially co-planar with the super-capacitor electrode, wherein the battery electrode includes a portion between two portions of the super-capacitor electrode and/or the super-capacitor electrode includes a portion between two portions of the battery electrode.

10. The integrated circuit as defined by claim 9 wherein the battery electrode and super-capacitor electrode are electrically connected in parallel.

11. The integrated circuit as defined by claim 9 wherein the shared electrode is formed at least in part from a material so that it has surface energy storage capability and substantially no volumetric storage capability, the shared electrode comprising a shared anode for both the super-capacitor electrode and the battery electrode.

12. The integrated circuit as defined by claim 9 wherein the shared electrode comprises a material having both surface energy storage capability and volumetric energy storage capability, the super-capacitor electrode and the shared electrode forming an asymmetric super-capacitor, the shared electrode forming a shared cathode for the super-capacitor electrode and the battery electrode.

13. The integrated circuit as defined by claim 9 further comprising at least one of active circuitry and MEMS structure supported by the substrate and in electrical communication with the battery electrode and the super-capacitor electrode.

14. The integrated circuit as defined by claim 9 wherein the super-capacitor electrode and the battery electrode are in one layer supported by the substrate.

15. The integrated circuit as defined by claim 14 wherein the super-capacitor electrode has a portion that is interdigitated with a portion of the battery electrode.

16. The integrated circuit as defined by claim 9 further comprising switching circuitry to switch between at least a) a first state using the battery electrode and the shared electrode only, and b) a second state using the super-capacitor electrode and the shared electrode only, and c) a third state connecting the super-capacitor electrode and the battery electrode.

17. The integrated circuit as defined by claim 9 wherein the super-capacitor electrode comprises graphene and the battery electrode comprises graphite.

18. The integrated circuit as defined by claim 9 further comprising a cap on the substrate covering the shared electrode, super-capacitor electrode and battery electrode wherein the electrolyte fills the cap such that the electrolyte envelops the shared electrode.

19. The integrated circuit as defined by claim 9 wherein the electrolyte comprises a solid electrolyte.

20. The integrated circuit as defined by claim 9 further comprising a current collector layer adjacent to and in electrical contact with the shared electrode.

Assignees

• Analog Devices Inc

Inventors

• Jiang Yangqi
• Yang Kuang L

Classifications

• H10W42/00

  Arrangements for protection of devices (arrangements for thermal protection H10W40/00) · CPC title

• Y02E60/13

  Energy storage using capacitors · CPC title

• H01G11/22

  Electrodes · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M4/525

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title