Dioxide Materials’ Sustainion ® anion exchange membranes (AEMs) have much lower area specific resistance (ASR) than the competition. Buy them to get higher currents at the same voltage.
Sustainion® Anion Exchange Membranes
| Membrane | ASR in 1 M KOH, 60 °C | pH Range |
| Sustainion® 37-50 | 0.045 Ω-cm2 | 2-14 |
| Nafion 115 | 0.52 Ω-cm2 | 0-13 |
| Fumasep FAPQ-375 | 0.83 Ω-cm2 | 0-11 |
| AMI-7001 | 2.0 Ω-cm2 | 0-10 |
| PBI | 8.3 Ω-cm2 | 2-10 |
| Neosepta ACN | >50 Ω-cm2 | 0-8 |
Conductivity of Sustainion X37 as a function of temperature in various supporting electrolytes
Sustainion® 37 membranes outperform the competition
The effects of membrane on the linear sweep voltammogram taken with an alkaline water electrolyzer with a FeNiO4 anode catalyst and a FeNiCo cathode catalyst in 1 M KOH at 60 °C
The effect of membrane on an alkaline water electrolyzer with a FeNiO4 anode catalyst and A FeNiCo cathode catalyst in 1 M KOH at 60 °C at a constant current of 1 A/cm2. The fumasep membrane failed after 200 hours.
CO2 Electrolysis
A constant current run (200 mA/cm2) of a room temperature CO2 electrolyzer with a Sustainion® 37-50 membrane and Sustainion® A9 ionomer in the cathode catalyst layer.
H2O Electrolysis
A constant current run (1000 mA/cm2 ) of a 60 °C alkaline water electrolyzer with a Sustainion® 37-50 membrane and a NiFeO4 anode catalyst and a NiFeCo cathode catalyst.
