The Core Working Principle of Ion Membrane Electrolyzer

The electrolyzer is strictly divided into an anode chamber and a cathode chamber by a perfluorosulfonic acid/perfluorocarboxylic acid composite cation exchange membrane. This membrane features unipolar selective permeability: it only allows cations such as sodium ions to migrate directionally to the cathode, completely prevents reverse penetration of chloride ions and hydroxide ions, and simultaneously eliminates the risk of explosion caused by mixing chlorine and hydrogen gases.

Purified saturated brine is fed into the anode chamber, where chloride ions are oxidized by electric discharge to produce chlorine gas. Sodium ions migrate through the ion exchange membrane into the cathode chamber. Water molecules in the cathode chamber undergo reduction reactions to generate hydrogen gas and a high-concentration sodium hydroxide solution.

Products from the anode and cathode chambers are exported separately, achieving the entire process free of cross-contamination and side reaction mixing.