Intrinsic Properties
Aquivion® glass transition temperature (Tg) is higher than for long side-chain ionomers. Aquivion ® Tg is about 140°C (284°F).
Sure. Please download the Aquivion® Dispersion Cast Reinforced Membranes Technical Bulletin.
Aquivion® maximum thermal resistance temperature is about 230°C (446°F).
Use of Aquivion®as a Proton-conductive Binder in PEM Fuel Cell Electrodes
Thanks to its polymer structure, Aquivion® has high proton conductivity combined with minimized platinum catalyst deactivation and outstanding chemical stability. The broad portfolio of Aquivion® dispersions makes it possible to select the proper grade in terms of proton conductivity and water affinity (water management).
Normally this is not necessary. The membrane Tg determines the bonding/transfer temperature. Nonetheless, a study to find the most favorable temperature should be performed during development (“design of experiments”), along with the optimization of other parameters.
No, Aquivion® base electrodes have good affinity with all perfluorosulfonic acid membranes. Suitable interface electrode-membrane can be obtained with all perfluorosulfonic acid membranes.
Sure. The proper solvent system needs to be selected in order to avoid undesirable membrane swelling.
Use of Aquivion® as a Proton-conductive Resin in PEM Fuel Cell Membranes
Aquivion® low equivalent weight Dispersions, D72-25BS or D79-25B.
Usually, the membrane annealing conditions need a temperature higher than 180°C/356°F (40°C/104°F higher than Tg) with 200°C/392°F being the preferred temperature. Therefore, a study to find the most favorable temperature should be performed during development (“design of experiments”), along with the optimization of other parameters.