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