Asymmetric electrochemical cell apparatus, and operating methods thereof

Patent metadata

Field	Value
Publication number	US-11111160-B2
Application number	US-201615753717-A
Country	US
Kind code	B2
Filing date	Aug 25, 2016
Priority date	Aug 25, 2015
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

Asymmetric electrochemical cell apparatus, and methods of operating such apparatus to produce electrolyzed water.

First claim

What is claimed is:

1. A towel, comprising:
(a) at least a first electrode layer covered by a cloth suitable to reduce mechanical abrasion;
(b) at least a second electrode layer;
(c) an electrically insulating layer disposed in between said first electrode layer and said second electrode layer; at least one of said first electrode layer, said electrically insulating layer, and said second electrode layer being adapted to absorb a liquid;
(d) connectors to facilitate connection of said first electrode layer and said second electrode layer to a power supply; and
(e) an electrochemical capacitance ratio (R ec ) of said at least a first electrode layer to said at least a second electrode layer of at least 7:1.

2. The towel as claimed in claim 1 , wherein the first electrode layer comprises activated carbon.

3. The towel as claimed in claim 1 , wherein the second electrode layer comprises a construct selected from a graphite sheet, a carbon cloth, a carbon paper and a titanium cloth.

4. An assembly comprising:
A towel as claimed in claim 1 , and a power supply connected to said connectors, said power supply adapted to apply an electrical current between said first and second electrode layers.

5. The assembly as claimed in claim 4 comprising a processor adapted to reverse a polarity of said electrical current.

6. A method comprising:
wetting a towel in the assembly of claim 4 with tap water;
applying an electrical current between said first and second electrode layers using said power supply;
wherein said current generates hypohalous acid from said tap water.

7. The method according to claim 6 , comprising wiping a surface with said towel so that said hypohalous acid exerts an antimicrobial effect on said surface.

8. An asymmetric electrochemical cell comprising:
(a) at least a first electrode layer;
(b) at least a second electrode layer;
(c) an electrochemical capacitance ratio (R ec ) of the first electrode layer to the second electrode layer of at least 3:1;
(d) a housing adapted to contain the first and the second electrodes such that they are immersed in an aqueous solution during use;
(e) a processor; and
(f) a power supply;
wherein the electrodes are connected to the opposite poles of the power supply, and wherein the processor and the power supply are adapted to apply a first electric current between said first and said second electrodes layers during a first mode and a second electric current during a second mode, suitable to produce hypohalous acid from a solution containing alkali metal cations and halogen anions.

9. The asymmetric electrochemical cell according to claim 8 , installed in a vessel equipped with a spraying head operable to spray a liquid contained in said vessel.

10. The asymmetric electrochemical cell according to claim 8 , wherein the second electrode layer comprises a construct selected from a graphite sheet, a carbon cloth, a carbon paper and a titanium sponge.

Assignees

• Univ Bar Ilan

Inventors

• Aurbach Doron
• Avraham Eran
• Cohen Izaak

Classifications

• C02F2201/4614

  Current · CPC title

• C02F1/4674 Primary

  with halogen or compound of halogens, e.g. chlorine, bromine · CPC title

• C25B15/08

  Supplying or removing reactants or electrolytes; Regeneration of electrolytes · CPC title

• C25B15/02

  Process control or regulation · CPC title

• C25B11/057

  consisting of a single element or compound · CPC title