Integrated Circuit with Shared Electrode Energy Storage Devices

Patent metadata

Field	Value
Publication number	US-2016204492-A1
Application number	US-201514593230-A
Country	US
Kind code	A1
Filing date	Jan 9, 2015
Priority date	Jan 9, 2015
Publication date	Jul 14, 2016
Grant date	—

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, the super-capacitor and battery forming at least a part of a monolithic integrated circuit.

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 3 wherein the super-capacitor electrode and shared electrode have about the same capacitance.

5 . 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.

6 . 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.

7 . 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.

8 . 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.

9 . The integrated circuit as defined by claim 1 wherein the super-capacitor electrode has a portion that is interdigitated with a portion of the battery electrode.

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

11 . A micro-level energy storage device comprising:
a substrate; a first electrode formed from a material having surface energy storage capability and substantially no volumetric energy storage capability; a second electrode formed from a material having volumetric energy storage capability; a third electrode formed from a material having one or both surface energy storage capability and volumetric energy storage capability; electrolyte in communication with the first electrode, the second electrode, and the third electrode; the first electrode configured to interact with the third electrode to form a first energy storage device, the second electrode configured to interact with the third electrode to form a second energy storage device, the substrate, first electrode, second electrode, and third electrode forming at least a part of a monolithic integrated circuit.

12 . The micro-level energy storage device as defined by claim 11 wherein the first energy storage device comprises a super-capacitor.

13 . The micro-level energy storage device as defined by claim 11 wherein the second energy storage device comprises a battery.

14 . The micro-level energy storage device as defined by claim 11 wherein the first energy storage device is electrically connected in parallel with the second energy storage device.

15 . The micro-level energy storage device as defined by claim 11 wherein the third electrode is configured to form an anode with both the first energy storage device and the second energy storage device.

16 . A method of forming an integrated circuit having an energy storage device, the method comprising:
forming a first electrode on a substrate; forming a second electrode on the substrate; adding an electrolyte to the substrate, the electrolyte at least partly encapsulating the first and second electrodes; forming a third electrode on the substrate, the third electrode being spaced from the first and second electrodes, the electrolyte being between the first electrode and the third electrode, the electrolyte being between the second electrode and the third electrode; separating the substrate into a plurality of individual monolithic integrated circuit dice, a plurality of the dice having the first electrode, the second electrode, and the third electrode, the plurality of dice each being configured so that the first electrode interacts with the third electrode to form first energy storage device, each of the plurality of dice also being configured so that the second electrode interacts with the third electrode to form a second energy storage device.

17 . The method as defined by claim 16 wherein the first energy storage device comprises a super-capacitor and the second energy storage device comprises a battery.

18 . The method as defined by claim 17 wherein the super-capacitor is electrically connected in parallel with the battery.

19 . The method as defined by claim 16 wherein the electrolyte comprises a solid electrolyte material.

20 . The method as defined by claim 16 wherein the third electrode comprises a material having one or both surface energy storage capability and volumetric energy storage capability.

Assignees

• Analog Devices Inc

Inventors

• Jiang Yingqi
• 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

• 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

• H01G11/22

  Electrodes · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title