cation exchange membrane Fumasep FKS-50 separation membrane

$77.02

Productthickness (um)：

50um

Model：

FM-EM-MM-0008

Brand：

Fumasep(Fuma)

Classification：

ionexchange membrane, energy material, experimental material, fuel cells, all

item_No

Specifications

Price

FM-EM-MM-000801

10*10cm

$77.02

Details

Overview

Details

This product is designed for ion transport and separation in electrochemical processes, such as electrodialysis desalination, capacitive deionization, battery systems, and electrolysis. The Fumasep FKS-50 is a transparent cation exchange membrane with a thickness of approximately 50 μm, delivered in dry form requiring self-activation before use. It offers a low area resistance of 1.8–2.5 Ω/cm² in sodium ion form, combined with high ion selectivity (97–99%) and an ion exchange capacity of 1.2–1.4 meq/g. The membrane exhibits minimal swelling (0–2% water absorption swelling rate) and broad pH stability from 1 to 14, supporting robust performance under acidic or alkaline conditions. These properties make it suitable for applications requiring efficient cationic transport and separation, including chemical synthesis and energy conversion.

Model	Fumasep FKS-50
Physical Properties
Appearance	Transparent Film
Thickness (um)	~50um
Liner Paper	Colorless Rigid PET Foil
Delivery Status	Dry, requires self-activation
Resistance (Ω/cm2)	1.8~2.5 (Sodium Ion Form)
Density (mg/cm2)	7.5~8.3
Ion Exchange Capacity (meq/g)	1.2~1.4 (Sodium Ion Form)
Ion Selectivity	97~99%
Water Absorption (25℃)	10~20wt%
Water Absorption Swelling Rate (25℃)	0~2%
Foaming Point in Water (25℃)	＞2.5 bar
Acid-Base Stability	pH 1~14
Characteristics	Low Resistance, High Selectivity, High Acid-Base Stability
Applications	Electrodialysis desalination, capacitive deionization, and can also be used in other processes requiring cation exchange and separation, such as batteries, electrolysis, chemical synthesis, etc., providing efficient ion transport and separation for these processes, promoting reactions and product formation.

Non-product quality problem, no return

Confidentiality requirements regarding the use statement of the diaphragm

Dear Customer:

To avoid potential intellectual property risks, we hereby remind you to pay attention to the following important points:

1. Unauthorized disclosure is prohibited.
Without the formal written authorization from the manufacturer (such as UBE of Japan, Wscope of Korea, Celgard of the United States, etc.) or its parent company, please do not explicitly mention the use of the separators from these manufacturers in any public setting (including but not limited to patent applications, paper publications, product promotions, technical documents, social media, exhibitions, or media reports, etc.).
2. Legal risk warning
If an intellectual property infringement dispute (such as trademark, patent or trade secret issues) occurs due to unauthorized disclosure, all legal responsibilities and economic losses arising therefrom shall be borne by the disclosing party on its own.

Please make sure to pay attention to the above requirements. Avoiding any unnecessary legal disputes caused by negligence is of utmost importance. If you have any questions, please feel free to contact us at any time.