Description

Nafion(R) Dispersion Solution De1021 Cs Type is a specialized perfluorosulfonic acid (PFSA) ionomer dispersion, where the proton (H+) has been exchanged for cesium (Cs+) ions. This product matters for applications requiring a proton-conducting membrane precursor with enhanced thermal stability and tailored catalytic properties. It is primarily needed by manufacturers and researchers in the advanced energy and chemical processing sectors.

Application

• Fabrication of catalyst-coated membranes (CCMs) and membrane electrode assemblies (MEAs) for fuel cells.
• Preparation of ion-selective coatings and composite membranes for electrochemical sensors and separations.
• Use as a binder or ion-conducting component in electrodes for advanced battery systems.
• Development of heterogeneous acid catalysts for organic synthesis and chemical processing.
• Surface modification of materials to impart proton conductivity and chemical resistance.
• Research and development of next-generation energy conversion and storage devices.

Basic Information

Product Name	Nafion(R) Dispersion Solution De1021 Cs Type
CAS No.	118473-68-0
Molecular Formula	(C7HF13O5S·C2F4)x (Cs+ form)
Molecular Weight	Contact for details
Synonyms	Perfluorosulfonic acid-PTFE copolymer, cesium salt; Nafion Cs+ dispersion; DE1021 Cs+; PFSA-Cs dispersion; Ionomer dispersion, cesium form; Cesium Nafionate dispersion; 1100 EW Nafion Cs+ type; Perfluorinated ion-exchange resin, Cs form
EINECS	Contact for details

Quality Control

Our Nafion(R) Dispersion Solution De1021 Cs Type is produced and tested under strict quality management protocols. Each batch is characterized for critical parameters including solid content, equivalent weight, ion exchange capacity, and particle size distribution to ensure consistent performance and batch-to-batch reproducibility. Certificates of Analysis (COA) detailing these specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store at room temperature (15-25°C). Do not freeze. The dispersion is sensitive to evaporation and contamination; ensure containers are sealed when not in use.

Specification

Item	Specification
Appearance	Clear to translucent dispersion
Solid Content	Contact for details
Equivalent Weight (EW)	~1100 g/mol SO3- (Cs+ form)
Ion Exchange Capacity	Contact for details
Dispersing Medium	Water/Alcohol mixture
Particle Size	Colloidal dispersion
pH	Contact for details
Identification (IR)	Complies

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.