Ion exchange membrane
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsAtsushi Nakajima, Naoki Sakamoto, Takuya Morikawa
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Abstract
The ion exchange membrane according to the present invention comprises a layer A comprising a fluorine-containing polymer having a sulfonic acid group and a layer B comprising a fluorine-containing polymer having a carboxylic acid group, wherein the layer B has a value of an ion cluster diameter distribution M represented by the following formula (B) of greater than 10: M=(a0)2/(σ)2 (B) wherein M represents an ion cluster diameter distribution, a0 represents an average ion cluster radius, and σ represents a standard deviation of an ion cluster radius.
Claims7
An ion exchange membrane comprising:
- a layer A comprising a fluorine-containing polymer having a sulfonic acid group;
- and
- a layer B comprising a fluorine-containing polymer having a carboxylic acid group, wherein
- the layer B has a value of an ion cluster diameter distribution M represented by the following formula (B) of greater than 10:
- M=(a0)2/(σ)2 (B)
- wherein M represents an ion cluster diameter distribution, a0 represents an average ion cluster radius, and σ represents a standard deviation of an ion cluster radius.
Dependencies are inferred from the claim text.