Electrode system and method for calculating character values of solution using the same

• US 9,297,781 B2
• Filed: 10/12/2012
• Issued: 03/29/2016
• Est. Priority Date: 10/14/2011
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jeong, Yong Won, Lee, Yong Soo, Ko, Young Chul
• Primary Examiner(s): DIETERLE, JENNIFER M
• Application Number:
  US13/650,809
• Publication Number:
  US 20130092560A1
• Time in Patent Office: 1,264 Days
• US Class Current: 1/1
• CPC Class Codes: G01N 27/4168 Oxidation-reduction potential, e.g. for chlorination of water water analysis G01N33/18

Abstract

An electrode system for measuring properties of solutions using a porous platinum electrode. The electrode system includes a low porosity platinum working electrode in which platinum is deposited in a porous form on the surface of an electrode, and a high porosity platinum electrode having a higher roughness factor than the low porosity platinum electrode.

Claims

1. An electrode system comprising:

a low porosity platinum working electrode in which platinum is deposited in a porous form on the surface of an electrode;

a high porosity platinum electrode having a higher roughness factor than the low porosity platinum electrode;

a reference electrode; and

a processor configured to calculate a pH of the solution based on a measured potential value between the high porosity platinum electrode, which acts as a working electrode, and the reference electrode and configured to calculate an oxidation-reduction potential of a solution based on another measured potential value between the low porosity platinum working electrode and the high porosity platinum electrode, which acts as another reference electrode.

2. The electrode system according to claim 1, wherein the low porosity platinum working electrode has a roughness factor of about 1 to about 50 and the high porosity platinum working electrode has a roughness factor of about 50 to about 400.

3. The electrode system according to claim 1, wherein the reference electrode is made of gold or silver.

4. The electrode system according to claim 1, wherein the low porosity platinum working electrode and the high porosity platinum working electrode are working electrodes with respect to the reference electrode and the low porosity platinum working electrode is an oxidation-reduction potential (ORP) measurement electrode and the high porosity platinum working electrode is a pH measurement electrode.

5. The electrode system according to claim 1, wherein the low porosity platinum electrode is a working electrode that measures an oxidation-reduction potential of a solution using the high porosity platinum electrode as a reference electrode.

6. The electrode system according to claim 5, wherein the oxidation-reduction potential calculated by the low porosity platinum electrode using the high porosity platinum electrode as a reference electrode is an oxidation-reduction potential based on a dissolved gas present in the solution.

7. The electrode system according to claim 6, wherein the solution is reducing water in which hydrogen gas is dissolved and the dissolved gas comprises a hydrogen gas.

8. The electrode system according to claim 1, a control unit to control a relay to apply a positive potential to one or more of the low porosity platinum working electrode and the high porosity platinum electrode relative to the reference electrode to perform oxidation recycling of the one or more of the low porosity platinum working electrode and the high porosity platinum electrode.