Electrolysis electrode

• US 4,285,796 A
• Filed: 08/21/1978
• Issued: 08/25/1981
• Est. Priority Date: 08/21/1978
• Status: Expired due to Term

• Current Assignee: Research Corporation, University of Virginia
• Original Assignee: Research Corporation, University of Virginia
• Inventors: Stoner, Glenn E., Cahen, George L. Jr.
• Primary Examiner(s): Edmundson, F.
• Application Number:
  US05/935,155
• Time in Patent Office: 1,100 Days
• Field of Search: 204/290 R, 204/290 F, 204/294, 204/195 B, 204/1 E
• US Class Current: 204/290.11
• CPC Class Codes: C25B 11/02 characterised by shape or form
• CPC Class Codes: C25B 11/095 at least one of the compounds being organic
• CPC Class Codes: Y10S 435/817 Enzyme or microbe electrode

Abstract

An electrode, which comprises an electrically conductive current collector, and a working surface containing a multiplicity of conductive islands in a non-conducting matrix wherein the majority of said islands are in electrically conductive contact with said current collector wherein the average size of said conductive islands and the average spacing between said conductive islands are of the same order of magnitude as the diffusion layer of the solution intended to be treated when said electrode is immersed into said solution.

Claims

1. An electrode, which comprises:

an electrically conductive current collector; and

a working surface containing a multiplicity of conductive islands in a non-conducting matrix wherein the majority of said islands are in electrically conductive contact with said current collector wherein the average size of said conductive islands ranging from 3-30 μ

m and the average spacing between said conductive islands ranging from 3-50 μ

m are of the same order of magnitude as the diffusion layer of the solution intended to be treated when said electrode is immersed into said solution, said surface having fixed thereto on the non-conducting matrix thereof, an enzyme, thereby rendering said electrode capable of simultaneously effecting enzymatic and electrolytic reactions.

2. The electrode of claim 1, wherein said non-conducting matrix is a thermoplastic or thermosetting resin.

3. The electrode of claim 1, wherein the total conductive area of said electrode is 30-60% of the total working surface, and wherein the average cross-sectional area of said islands is of the same order of magnitude as the diffusion layer of the solution intended to be treated when said electrode is immersed into said solution.

4. The electrode of claim 1, wherein said current collector is a metal film of a thickness greater than 10 μ

m deposited on the non-working side of said electrode.