A High Performing Zero Gap Alkaline Electrolyzer

Monday, 2 October 2017: 11:00
Chesapeake 12 (Gaylord National Resort and Convention Center)
R. Masel, Z. Liu, H. Yang, S. D. Sajjad, Y. Gao, and J. J. Kaczur (Dioxide Materials)
Water electrolyzers are being developed as a way of storing renewable energy, as a way to produce hydrogen for fuel cell automobiles, and as a route to renewable fuels and chemicals. In this paper, we demonstrate alkaline water electrolyzers at 60 °C with iron/nickel/cobalt catalysts that show 1 A/cm² at a 1.9 V cell potential The performance is stable for 2000 hours, showing only 3-5 µV/hr degradation. Key to the findings is the development of new Sustainion™ alkaline exchange membranes that show high conductivity and stability in 1 M KOH.

The paper will discuss new developments that improve the response of the electrolyzers to process upsets, and to improve the on-off performance of the devices.