462223 Sustanion™ Membranes for Electrolyzers and Fuel Cells

Monday, November 14, 2016: 4:51 PM
Plaza B (Hilton San Francisco Union Square)
Hongzhou Yang, Zengcai Liu, Robert Kutz, Syed Dawar Sajjad and Richard I. Masel, Dioxide Materials, Boca Raton, FL

This paper will discuss the properties of Sustanion™ membranes for electrolyzers and fuel cells. The membranes are based on a styrene backbone that has been functionalized with Imidazolium groups and other additives. Different formulations show conductivities between 30 and 70 mS/cm in KOH and are unexpectedly stable. A CO2 electrolyzer has been run for 6 months at room temperature with no significant loss in performance. We observe CO2 reduction currents up to 600 mA/cm² at 3.25 V. The closest competitor needs to go to 6.5 V to obtain similar currents. An alkaline water electrolyzer has been run for 200 hrs at 60 C in 1 M KOH. We observe currents of 1 A/cm² at voltages less than 2V. Again, 3 time higher than the closest competitor. We are expecting to offer these membranes for beta-testing by various academic groups. Please let us know if you are interested.

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See more of this Session: Fuel Cell Membranes
See more of this Group/Topical: Separations Division