D1021 Nafion Dispersion - Water based 1100 EW at 10 wt%

Brand: Chemours
Product Code: 592163

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Chemours (formerly DuPont) Nafion™ PFSA polymer dispersions are made from chemically stabilized perfluorosulfonic acid (PFSA) / polytetrafluoroethylene (PTFE) copolymer in the acid (H⁺) form, and are available in several polymer content and dispersant compositions. Typical uses include fabrication of thin films and coating formulations for fuel cell membranes, catalyst coating, sensors, and a variety of electrochemical applications.

Fuel Cell Applications: Nafion D1021 Dispersion (a diluted, liquid form of the same chemical used for a PEM fuel cell membrane) drastically reduces the amount of platinum needed as a catalyst by exposing a larger fraction of the platinum to the hydrogen gas.  Also, the Nafion acts as a binding agent to hold the platinum, membrane, and gas diffusion layer together.

Nafion Dispersion D520, D521, D1021, D2020, and D2021 Properties Sheet

Nafion PFSA Polymer Dispersions Properties
Base Water
Equivalent Weight (EW) 1100
Polymer Content (wt. %) 10.0 min and 12.0 max
Water Content (wt. %) 87 - 90
VOC Content (wt. %) < 1
VOC Content (wt. %) - 1-Propanol N/A
VOC Content (wt. %) - Ethanol N/A
VOC Content (wt. %) - Mixed Ethers and Other VOCs < 1
Specific Gravity 1.05 - 1.07
Available Acid Capacity (meq/g, H+ polymer basis) > 0.92
Total Acid Capacity (meq/g, H+ polymer basis) 0.95 - 1.03
Viscosity (cP; at 25C and 40 sec-1 Shear Rate) 2 - 10

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