Apparatus for carrying out electrochemical reactions and correspondingly suitable bipolar electrodes

US4203821A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Jurgen Cramer · Eppstein, DE
• Werner Lindner · Eppstein, DE

Key dates

• Filing date: Aug 30, 1978
• Grant date: May 20, 1980
• Expiry date: Aug 30, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25B3/23
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Electrochemical, especially organo-electrochemical, reactions are carried out with improved current efficiency in a continuous-flow cell with the use of bipolar electrodes placed in a frame of non-conducting material, especially a polyolefin. Preferably, the electrically active part of the electrodes consists of glass-like carbon the cathode face of which is coated with a material reducing the hydrogen overvoltage, for example titanium carbide or tungsten carbide.