Electrode assembly for gas-forming electrolyzers

US4839013A · kind A · utility

Assignee

• Metallgesellschaft AG · DE

Inventors

• Karl Lohrberg · Heusenstamm, DE
• Peter Kohl · Neuberg, DE

Key dates

• Filing date: Oct 9, 1987
• Grant date: Jun 13, 1989
• Expiry date: Oct 9, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25B11/03
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

In an electrode assembly for gas-forming electrolyzers, particularly for monopolar membrane electrolyzers comprising vertical plate electrodes and opposite electrodes and a membrane between the plate electrode and the opposite electrode, the distribution of current in the membrane is improved and the voltage drop is decreased in that the plate electrodes are provided on that surface which faces the membrane with ante-electrodes, which consist of apertured, electrically conducting surface structures, which are electrically conductively connected to the plate electrodes and extend in planes which are parallel to the plate electrodes.