ANODE FOR ION EXCHANGE MEMBRANE ELECTROLYSIS VESSEL, AND ION EXCHANGE MEMBRANE ELECTROLYSIS VESSEL USING SAME

摘要

Provided are: an anode for an ion exchange membrane electrolysis vessel with which an alkali metal chloride aqueous solution can be electrolyzed at lower voltage than in the past, and which can reduce the concentration impurity gases contained in the anode gas; and an ion exchange membrane electrolysis vessel that uses the same. This anode for an ion exchange membrane electrolysis vessel is used in an ion exchange membrane electrolysis vessel which is divided into an anode chamber and a cathode chamber by an ion exchange membrane. The anode for an ion exchange membrane electrolysis vessel is provided with a least one apertured metal plate (1) (expanded metal (1)), the apertured metal plate (1) (expanded metal (1)) having a thickness of 0.1-0.5 mm, and a ratio SW/LW of the short axis (SW) and the long axis (LW) of 0.45-0.55. The short axis (SW) is preferably 3.0 mm or less.