Aluminum-ion capacitor and uses thereof

Patent metadata

Field	Value
Publication number	US-2017338052-A1
Application number	US-201615227002-A
Country	US
Kind code	A1
Filing date	Aug 3, 2016
Priority date	May 20, 2016
Publication date	Nov 23, 2017
Grant date	—

Abstract

Disclosed is an aluminum ion capacitor, including a separator, an anode and a cathode, between which the separator is interposed, and an electrolyte contacting the anode and the cathode, wherein the anode contains aluminum, the electrolyte contains aluminum ions, and an electrical double layer is formed at the cathode and intercalation and deintercalation of aluminum ions are performed at the anode. Accordingly, a supercapacitor having increased energy density can be effectively manufactured at lower cost than lithium ion capacitors, and also, the supercapacitor has high material stability and thus is not limited as to electrode configuration, and an electrode configuration that has a low manufacturing cost and is able to increase energy density and power density can be adopted.

First claim

What is claimed is:

1 . An aluminum ion capacitor, comprising:
a separator; a cathode and an anode, between which the separator is interposed; and an electrolyte, which contacts the cathode and the anode, wherein the anode comprises aluminum, the electrolyte includes an aluminum ion, and an electrical double layer is formed at the cathode and intercalation and deintercalation of the aluminum ion are performed at the anode.

2 . The aluminum ion capacitor of claim 1 , wherein the anode is an aluminum foil.

3 . The aluminum ion capacitor of claim 1 , wherein the anode is any one selected from among aluminum foam, an aluminum powder, and shell particles having an aluminum coating layer.

4 . The aluminum ion capacitor of claim 1 , wherein the cathode includes porous carbon as an active material.

5 . The aluminum ion capacitor of claim 4 , wherein the porous carbon is any one selected from among activated carbon, carbon nanotubes, and graphene.

6 . The aluminum ion capacitor of claim 1 , wherein the cathode includes, as an active material, any one selected from among an oxide, a sulfide, a nitride, and a conductive polymer.

7 . The aluminum ion capacitor of claim 1 , wherein the cathode includes a current collector attached thereto.

8 . The aluminum ion capacitor of claim 1 , wherein the anode includes a current collector attached thereto.

9 . The aluminum ion capacitor of claim 1 , wherein the aluminum ion capacitor is used as an energy storage source of an energy storage system comprising the energy storage source for storing electrical energy supplied from outside and a controller for controlling charge and discharge of the energy storage source.

10 . The aluminum ion capacitor of claim 1 , wherein the aluminum ion capacitor is used as an ultra-compact supplementary battery.

11 . An aluminum ion capacitor, comprising:
a separator; a cathode and an anode, between which the separator is interposed; and an electrolyte, which contacts the cathode and the anode, wherein the electrolyte includes an aluminum ion, the anode comprises a material that enables intercalation and deintercalation of the aluminum ion, and an electrical double layer is formed at the cathode and intercalation and deintercalation of the aluminum ion are performed at the anode.

Assignees

• Korea Inst Energy Res

Inventors

• Yoo Jung-Joon
• Lee Chan-Woo
• Kim Yong-Il
• Lee Hae Soo

Classifications

• H01G11/50

  specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation · CPC title

• H01G11/52

  Separators · CPC title

• H01G11/70

  characterised by their structure · CPC title

• H01G11/30

  characterised by their material · CPC title

• H01G11/26 Primary

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