Anodes for electrolyses

• US 4,849,085 A
• Filed: 04/22/1987
• Issued: 07/18/1989
• Est. Priority Date: 04/25/1986
• Status: Expired due to Fees

• Current Assignee: Ciba-Geigy Corporation (Novartis Ag)
• Original Assignee: Ciba-Geigy Corporation (Novartis Ag)
• Inventors: Kluger, Petra, Debrodt, Heiner
• Primary Examiner(s): Niebling, John F.
• Assistant Examiner(s): GORGOS, KATHRYN L
• Application Number:
  US07/041,888
• Time in Patent Office: 818 Days
• Field of Search: 204/290 F, 204/280, 204/242
• US Class Current: 204/290.13
• CPC Class Codes: C25B 11/031 Porous electrodes
• CPC Class Codes: C25B 11/091 consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds

Abstract

An anode for aqueous electrolyses, consisting of a frame or support and a porous substrate which is connected to the frame and in which electrochemically active substances are dispersed. The substrate consists of titanium which is doped with chromium or nickel.

Claims

1. An anode for aqueous electrolyses, consisting of a frame which is resistant to the electrolyte and to the electrolysis products, a titanium porous substrate coated on the frame, and electrochemically active substances which are distributed in the pores of the substrate, wherein the porous titanium substrate is doped with a metal selected from the group consisting of chromium and nickel, the level of dopant is 0.5 to 40% by weight of the substrate and the thickness of the substrate is 0.2 to 1 mm.

2. An anode as claimed in claim 1, wherein the amount of the doping elements is 2 to 20% by weight of substrate.

3. An anode as claimed in claim 2 wherein the porous substrate has a porosity of 20 to 60 volume-%.

4. An anode as claimed in claim 1 wherein the porous substrate has a porosity of 20 to 60 volume-%.