Energy storage device, method of manufacturing same, and mobile electronic device containing same

Patent metadata

Field	Value
Publication number	US-9978533-B2
Application number	US-201213977493-A
Country	US
Kind code	B2
Filing date	Feb 21, 2012
Priority date	Feb 21, 2012
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

An energy storage device includes a middle section ( 610 ) including a plurality of double-sided porous structures ( 500 ), each of which contain multiple channels ( 511 ) in two opposing surfaces ( 515, 525 ) thereof, an upper section ( 620 ) comprising a single-sided porous structure ( 621 ) containing multiple channels ( 622 ) in a surface ( 625 ) thereof, and a lower section ( 630 ) including a single-sided porous structure ( 631 ) containing multiple channels ( 632 ) in a surface ( 635 ) thereof.

First claim

What is claimed is:

1. An energy storage device comprising:
a double-sided porous structure having a first surface and an opposing second surface, the double-sided porous structure containing:
a first set of channels, each of which have an opening to the first surface of the double-sided porous structure;
a second set of channels, each of which have an opening to the second surface of the double-sided porous structure;
an electrically conductive center portion between the first and second sets of channels; and
an electrolyte contained within the first set of channels and the second set of channels;
a first single-sided porous structure adjacent to the first surface of the double-sided porous structure, the first single-sided porous structure having a first surface and an opposing second surface and containing a third set of channels, each of which have an opening to the first surface of the first single-sided porous structure and each of which contain an electrolyte; and
a second single-sided porous structure adjacent to the second surface of the double-sided porous structure, the second single-sided porous structure having a first surface and an opposing second surface and containing a fourth set of channels, each of which have an opening to the first surface of the second single-sided porous structure and each of which contain an electrolyte;
wherein the double-sided porous structure, first single-sided porous structure, and second single-sided porous structure are formed in solid material.

2. The energy storage device of claim 1 further comprising:
a first electrically conductive layer at the second surface of the first single-sided porous structure, the first electrically conductive layer having a first polarity; and
a second electrically conductive layer at the second surface of the second single-sided porous structure, the second electrically conductive layer having a second polarity that is opposite the first polarity.

3. The energy storage device of claim 1 further comprising:
a separator between one of the single-sided porous structures and the double-sided porous structure, where the separator prevents electrical contact between the double-sided porous structure and the single-sided porous structure but permits ionic charge carriers from the electrolyte to pass through.

4. The energy storage device of claim 1 further comprising:
a first separator between the double-sided porous structure and the first single-sided porous structure, the first separator preventing electrical contact between the double-sided porous structure and the first single-sided porous structure but permitting ionic charge carriers from the electrolyte to pass through; and
a second separator between the double-sided porous structure and the second single-sided porous structures, the second separator preventing electrical contact between the double-sided porous structure and the second single-sided porous structure but permitting ionic charge carriers from the electrolyte to pass through.

5. The energy storage device of claim 1 further comprising:
a second double-sided porous structure adjacent to the double-sided porous structure, wherein the second double-sided porous structure has a first surface and an opposing second surface and contains:
a fifth set of channels, each of which have an opening to the first surface of the second double-sided porous structure;
a sixth set of channels, each of which have an opening to the second surface of the double-sided porous structure;
an electrically conductive center portion between the fifth and sixth sets of channels; and
an electrolyte contained within the fifth set of channels and the sixth set of channels.

6. The energy storage device of claim 5 wherein:
the first and second double-sided porous structures are electrochemically connected in series.

7. The energy storage device of claim 5 wherein:
the first double-sided porous structure is electrochemically connected to the first single-sided porous structure; and
the second double-sided porous structure is electrochemically connected to the second single-sided porous structure, such that a resulting equivalent electrical circuit contains a plurality of capacitors electrically connected in parallel.

8. The energy storage device of claim 1 wherein:
at least one of the porous structures comprises an interior region containing the channels and an exterior region adjacent to the interior region; and
the exterior region is thicker than the interior region.

9. The energy storage device of claim 8 wherein:
the exterior region comprises an un-etched portion of the porous structure.

10. The energy storage device of claim 1 wherein:
the double-sided porous structure is formed from a semiconducting material or from a conducting material.

11. The energy storage device of claim 1 , wherein each of the channels in the double-sided porous structure has an opening to a surface of the double-sided porous structure;
wherein each of the channels in the first single-sided porous structure has an opening to a surface of the first single-sided porous structure; and
wherein each of the channels in the second single-sided porous structure has an opening to a surface of the second single-sided porous structure.

12. The energy storage device of claim 1 , wherein the solid material is silicon, germanium, GaAs, InP, BN, CdTe, tin, copper, aluminum, nickel, calcium, tungsten, molybdenum, manganese, silicon carbide, an organic semiconductor, or a silicon-germanium alloy.

13. The energy storage device of claim 1 , wherein the first set of channels, second set of channels, third set of channels, and fourth set of channels are formed by etching the solid material.

Assignees

• Gardner Donald S
• Aldridge Tomm V
• Holzwarth Charles W
• Pint Cary L
• Chen Zhaohui
• Jin Wei C
• Liu Yang
• Gustafson John L
• Intel Corp

Inventors

• Gardner Donald S
• Aldridge Tomm V
• Holzwarth Charles W
• Pint Cary L
• Chen Zhaohui
• Jin Wei C
• Liu Yang
• Gustafson John L

Classifications

• H01G11/26 Primary

  characterised by their structure, e.g. multi-layered, porosity or surface features · CPC title

• Y02E60/13

  Energy storage using capacitors · CPC title

• H01G11/00 Primary

  Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof · CPC title

• H01G11/30

  characterised by their material · CPC title

• H01G11/84

  Processes for the manufacture of hybrid or EDL capacitors, or components thereof · CPC title