FORBLUE™ FLEMION™ Ion Exchange Membranes Product Page

These membranes are used in the electrolyzers at electrolysis plants that decompose brine. They play a key part in manufacturing caustic soda (sodium hydroxide)/caustic potash (potassium hydroxide), chlorine, and hydrogen-basic chemical products. These chemicals are key ingredients of many products used in our daily lives.

FLEMION F-9060 is the latest grade. It works at a much lower voltage than F-9010 (-40mV versus 0mV) and features a higher CE and other performance improvements making it the most suitable option for Zero-Gap Electrolyzer operations.

AGC has continued its efforts to reduce electric resistance of ion exchange membranes over the last 40 years by applying innovative designs. FLEMION is a fluorinated cation exchange membrane that offers extremely low resistance and is the preferred product by many customers.

Related Information

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Presentation: FLEMION F-9060 Series Membranes

Fluorinated Materials for the Chlor-Alkali Industry

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Energy savings from low electric resistance
FLEMION fluorinated ion exchange membranes require low voltage at high DC current to decompose brine in an electrolyzer. Chlorine is generated at the anode, while sodium hydroxide (also called caustic soda) and hydrogen are generated at the cathode. Oxidation at the anode occurs simultaneously with reduction at the cathode, which makes current flow. The amount of energy consumed is a product of the voltage and current applied to the low power consumption results from the low resistance of the membrane.
High current efficiency
The electrical current efficiency is the ratio of the actual mass of a substance liberated from an electrolyte by the passage of current to the theoretical mass liberated according to Faraday's law. It is usually expressed as a percentage. A small part of hydroxide ions (OH-) generated on the cathode (negative side) of the electrolyzer passes through the cation exchange membrane to the anode side and cannot be collected as products. Reducing this part as much as possible increases the current efficiency. Our fluorinated cation exchange membrane for salt electrolysis has a carboxylic polymer layer which makes high electrical current efficiency. This fluorinated carboxylic polymer was developed by AGC to industrialize the membrane process of salt electrolysis. Now it is possible to keep electrical current efficiency high continuously.
Stable performance due to less impurity influence
The brine used for electrolysis includes impurities such as Ca and Mg that can negatively affect the performance of the membrane. For example, Ca reduces current efficiency while Mg increases voltage. FLEMION fluorinated ion exchange membranes minimize the influence of these impurities, enabling them to perform and remain stable longer.

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