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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
Sustanion® 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
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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.